MS-357, Lockheed-Martin Aeronautical Patent Collection

Transcription

1 Collection Number: MS-357 MS-357, Lockheed-Martin Aeronautical Patent Collection Title: Lockheed-Martin Aeronautical Patent Collection Dates: Creator: Lockheed Martin Corporation Summary/Abstract: The Lockheed Martin Aeronautical Patent Collection was developed by the Lockheed Aircraft Company to provide a single source of information concerning aviationrelated patents in the United States. The collection spans a period beginning with the initial experiments with balloons in 1844 to the aviation technologies developed through1988. The collection is organized according to the United States Patent and Trademark Office 244 Class of Aeronautics and Astronautics. The patents are filed in patent number order according to the subcategory class number assigned by the Patent Office. Quantity/Physical Description: 44 Linear Feet (44 Record Center Boxes) Language(s): English Repository: Special Collections and Archives, Paul Laurence Dunbar Library, Wright State University, Dayton, OH , (937) Restrictions on Access: There are no restrictions on accessing material in this collection. Restrictions on Use: Copyright restrictions may apply. Unpublished manuscripts are protected by copyright. Permission to publish, quote, or reproduce must be secured from the repository and the copyright holder. Preferred Citation: (Box Number, Folder Number), MS-357, Lockheed Martin Aeronautical Patent Collection, Special Collections and Archives, University Libraries, Wright State University, Dayton, Ohio Acquisition: Lockheed Martin Aeronautical Patent Collection was originally compiled by Lockheed Martin Corporation. The company donated the collection to Purdue University, who, in turn, forwarded the collection to Wright State University in May Processed by: Jeremy Katz, October 2010 Arrangement: The collection is arranged into ten series: Series I. Miscellaneous Series II. Aircraft, Heavier-than-Air 1

2 Series III. Series IV. Series V. Series VI. Series VII. Series VIII. Series IX. Series X. Aircraft, Lighter-than-Air Aircraft Sustentation Aircraft Propulsion and Steering on Land or Water Landing Gear Retarding and Restraining Devices Landing Field Arrangement Aircraft Structure Safety Lowering Devices Biographical/Historical Note The Lockheed Martin Corporation can trace its roots back to the earliest days of modern aviation. Glenn L. Martin established a company in 1909 that was a major airframe supplier to the U.S. Military and commercial industries. Around the same time, Allan Loughead founded the Lockheed Corporation, which also soon became a successful aircraft manufacturer. In 1995, the two merged to form the Lockheed Martin Corporation. This collection of patents was originally developed and maintained by the Lockheed Martin Corporation. Scope and Content The Lockheed Martin Aeronautical Patent Collection documents innovations in aviation from the mid-19 th century through most of the 20 th century. These patents pertain to everything from dirigibles and gliders to modern day jet engines and in-flight refueling methods. Researchers who utilize these records can learn much about aviation before the first sustained and controlled heavier-than-air flight and its advancements since. The collection is arranged into series based on the original classification system for aeronautical patents by the United States Patent and Trademark Office. Each patent is of the 244 class of aeronautics and astronautics and each series is arranged according to the subcategory of this class. Within each subcategory, the files are arranged according to patent number with the folder indicating the patent number range. Series I, Miscellaneous, consist of patents pertaining to trailing devices, noise abatement techniques, lightening arrester and static eliminators, as well as, composite aircraft. Series II, Aircraft, Heavier-than-Air, contains patents that address weight diminished aircraft, fluid sustained airplanes and helicopters, and dual propulsion means (horizontal and vertical). Series III, Aircraft, Lighter-than-Air, houses patents on dirigibles, airships, and hot-air balloons designs. Series IV, Aircraft Sustentation, includes patents referring to sustaining airfoils. It also addresses unique designs for fuselages and struts. Series V, Aircraft Propulsion and Steering on Land or Water, is the largest series and houses patents on everything from aircraft control and aircraft power plants, to steerable jets and floatation devices for planes. 2

3 Series VI, Landing Gear, relates to different patents on the design and function of landing gears for aircraft. Amphibian, retractable, coil spring, fluid pressure, and even inflatable landing gears are all devised in this series. Series VII, Retarding and Restraining Devices, contains patents relating to wheel brake arrangement, water brake arrangement, and aerodynamic retarders. Series VIII, Landing Field Arrangement, consists of patents on mooring devices and blast deflectors for aircraft landing fields. Series IV, Aircraft Structure, includes patents that address fuselage and body designs for cargo accommodation, seating arrangement for crews, and also shield and other protective devices. Patents relating to aerodynamic resistance reduction as well as airship hull and skin construction are also found in this series. Series X, Safety Lowering Devices, consists of patents relating to safely lowering an aircraft to the ground in the case of an emergency. Parachutes for entire planes and passenger compartments, as well as, safety devices for seats and crew are accommodated in this series. Some patents on kites are also found in this series. Subject Terms Organizations/Corporate Names Lockheed Martin Martin Marietta Company Loughead Aircraft Manufacturing Company Lockheed Aircraft Company Subjects (General) Aviation Aeronautics Astronautics Technological Innovations Patents Material Types Patents Collection Inventory Series I: Miscellaneous Box File Description Date Noise Abatement, Lightning Arresters and Static Eliminators, Trailing Devices ,583,658 3,637,170 Jun 1971 Jan

4 ,638,883 3,722,840 Feb 1972 Mar ,429,524 3,473,758 Feb 1969 Oct ,473,763 3,520,496 Oct 1969 Jul ,521,835 3,582,020 Jul 1970 Jun ,300,162 3,369,770 Jan 1967 Feb ,369,771 3,524,608 Feb 1968 Aug ,145,948 3,224,709 Aug 1964 Dec ,227,397 3,295,791 Jan 1966 Jan ,500,800 2,973,162 Mar 1950 Feb ,974,898 3,140,064 Mar 1961 Jul ,330,998 2,427,936 Oct 1943 Sep ,432,078 2,860,845 Dec 1947 Nov ,008,475 2,160,974 Jul 1935 Jun ,162,698 2,329,414 Jun 1939 Sep ,375 1,882,087 Jul 1902 Oct ,886,245 1,720,140 Nov 1932-July ,753,536 4,759,513 Aug 1973-July ,765,621 3,933,323 Oct 1973-Jan ,960,343 4,212,442 June 1976-July ,195,798 3,749,332 Apr 1980-July 1973 Composite Aircraft, Trains ,161,373 3,645,474 Dec 1964-Feb ,656,723 4,678,141 Apr 1972-July ,526,490 2,923,494 July 1951-Feb ,936,966 3,795,372 May 1960-Mar ,650,346 1,949,304 Nov 1927-Feb ,974,684 2,558,501 Sept 1934-June ,421,742 2,553,852 June 1947-May ,368 1,627,191 Apr 1963-May 1927 Missile Stabilization or Trajectory Control ,030,050-3,456,901 Apr 1962-July ,809,792-3,017,138 Oct 1957-Jan ,460,194-4,502,650` Jan 1949-Mar ,195-2,457,391 Mar 1899-Dec 1948 Optical Correlation ,459,392 Aug 1969 Series II: Aircraft, Heavier-than-Air Box File Description Date ,596,378-4,379,532 May 1952-Apr

5 ,046-4,040,577 Nov 1872-Aug ,285,818-1,695,394 Nov 1918-Dec ,788-1, Oct 1875-June 1917 Airplanes, Weight Diminished by Buoyant Gas ,700,107 2,332,648 Jan 1929 Oct ,379,255 4,014,483 Jun 1945 Mar 1977 Airplanes and Helicopter Sustained ,052,086 2,575,886 Aug 1936 Nov ,611,554 4,730,795 Sep 1952 Mar ,780,043-1,875,267 Oct 1930-Aug ,875,891 1,997,240 Sep 1932 Apr ,770,199 1,662,406 Jul 1930 Mar ,660,257 1,509,247 Feb 1928 Sep ,307,721 1,498,902 Jun 1919 Jun ,052,204 1,183,484 Feb 1913 May ,190,397 1,298,724 Jul 1916 Apr ,006,282 3,372,891 Oct 1911 Nov ,003, ,473 Sep 1911-Oct ,621,001-2,699,299 Dec 1952-Jan 1955 Convertible, Rotary Wing, Tail Sitters, Tilting Wing ,711,295-2,886,260 June 1955-May ,055,585-2,437,789 Sep 1936-Mar ,440,003-2,580,312 Apr 1948-Dec ,703,621-1,823,417 Feb 1929-Sep ,841,642-2,043,704 Jan 1932-June ,957-1,353,501 July 1910-Sep ,374,700-1,694,880 Apr 1921-Dec ,907,219-4,691,878 Sep 1975-Sep ,582,021 4,037,807 Jun 1971 Jul ,931,596 3,146,970 Apr 1960 Sep ,149,800 3,430,894 Sep 1964 Mar 1969 Airplane and Auto-Rotating Wing Sustained ,719,048-4,184,654 July 1929-Jan 1980 Airplane and Paddle Wheel Sustained ,532,902 4,194,707 Apr 1925 Mar ,882 1,487,228 Jun 1933 Mar 1924 Airplane and Cylindrical Rotor Sustained ,122,171-3,439,887 Dec 1944-Apr

6 Airplane and Beating Wing Sustained ,447-4,417,707 Jan 1918-Nov 1983 Airplane and Fluid Sustained, Circular, Dual Propulsion, Thrust Diverting, Channel Wing ,451,644 3,578,263 Jun 1969 May ,907,219 4,691,878 Apr 1932-July ,532,481-2,899,149 Dec 1950-Aug ,561,318-1,846,125 Nov 1925-Feb ,465-1,556,004 Dec 1876-Oct ,837,600-3,995,794 Sep 1974-Dec ,335,976 3,563,497 Aug 1967-Feb ,572,614 3,833,187 Mar 1971 Sep ,083,935 3,159,361 Apr 1962 Dec ,159,361 2,223,355 Dec 1964 Dec ,231,221 3,813,059 Jan 1966 May ,907,536 2,954,944 Oct 1959 Oct ,957,647 3,026,066 Oct 1960 Mar ,023,981 3,078,061 Mar 1962-Feb 1963 Airplane Sustained ,511,666-2,081,437 Oct 1924-May ,150,233-1,294,413 Aug 1915-Feb ,294,774-1,499,825 Feb 1919-July ,005,232-1,060,273 Oct 1911-Apr ,061,108-1,148,875 May 1913-Aug , ,028 June 1940-Mar , ,066 May 1877-July ,719,014-3,834,654 Sep 1955-Sep ,847,368-4,662,582 Nov 1974-May ,114,606 2,412,647 Apr 1938 Dec ,416,958 2,685,420 Mar 1947 Aug 1954 Aerial Torpedoes ,014,457 3,090,582 Jan 1962 May ,090,583 3,179,355 May 1963 Apr ,863,619 2,995,777 Dec 1958 Oct ,955,778 2,995,318 Oct 1960 Aug ,995,319 3,219,294 Aug 1961 Nov ,769,203 2,480,868 Jul 1930 Sep ,498,772 2,852,208 Feb 1950 Sep ,098 1,357,531 Jan 1911 Nov ,358,257 1,717,159 Nov 1920 Jun

7 ,181,812-3,233,848 May 1965-Feb ,235,204-3,347,494 Feb 1966-Oct 1967 Fluid Propelled ,669-1,606,494 June 1945-Dec ,697,770-1,990,308 Jan 1929-Feb ,700, ,165 Jan 1955-Feb ,977,068-3,062,482 Mar 1961-Nov ,065,932-4,598,886 Nov 1962-July ,071,221-2,507,657 Feb 1937-May ,508,288-2,696,953 May 1950-Dec 1954 Glider ,805,834-3,284,957 May 1931-Nov ,920,201-4,458,859 Nov 1975-July 1984 Helicopter Control and Logging ,447,762-4,534,524 June 1969-Aug 1985 Atmosphere Entry Vehicle with Stowed Rotor ,428,271 Feb 18, 1969 Helicopter or auto-rotating with sustained ,558,080-3,912,200 Jan 1971-Oct ,921,938-4,726,547 Nov 1975-Feb ,034-2,626,766 June 1944-Jan ,673,696-3,133,715 Mar 1954-May ,149,802-3,744,743 Sep 1964-July 1973 Automatic or Condition Responsive Control ,099,421-3,981,461 July 1963-Sep ,003,532-4,695,013 Jan 1977-Sep ,091,315-2,580,312 Mar 1914-Dec ,597,164-3,096,046 May 1952-July 1963 With Safety Lowering Devices ,732-1,351,821 Dec 1909-Sep ,435,190-4,709,881 Nov 1922-Dec 1987 With Landing, Mooring, or Nonaerial Propelling or Steering Geer ,514,822 3,226,059 Jul 1950 Dec ,288,295 4,516,744 Nov 1966 May ,002 1,892,036 Mar 1931 Dec ,917,530 2,479,125 Jul 1933 Aug

8 With Auxiliary Propulsion, Counter-Torque or Steering Devices ,058,678 2,481,749 Oct 1936 Sep ,486,272 3,211,397 Oct 1949 Oct ,211,398 4,609,165 Oct 1965 Sep ,378 1,506,716 May 1945 Aug ,527,666 4,531,692 Feb 1925 Jul ,347,997 4,711,415 Sep 1982 Dec 1987 Lift Generating Mechanism for an Aircraft ,527,757 July 1985 Auxiliary Rotor ,155,426 2,473,329 Apr 1939-June ,487,020 4,506,849 Nov 1949 Mar ,002 1,528,943 Mar 1931-May ,669,758 2,155,409 May 1928 Apr 1939 Having Plural Lifting Rotors ,002,711 3,572,616 Oct 1961 Mar ,591,109 4,703,906 July 1971-Nov ,984 2,464,726 June 1947 Mar ,483,480 2,973,924 Oct 1949 Mar ,801,046 4,457,476 Apr 1974 July 1984 Lifting Rotor having Lift Direction Varying Means ,015,656 3,957,227 Jan 1912 May ,921,939 4,434,957 Nov 1975 Mar 1984 Lifting Rotor Supports, e.g., Pylons ,920,202 4,720,060 Nov 1975 Jan ,851,368 3,163,378 Mar 1932 Dec ,514,154 3,972,491 May 1970 Aug 1976 Paddle Wheel Sustained ,415 4,390,148 Mar 1870 Jun 1983 Feathering ,438 1,382,847 Jan 1935 Jun ,414,577 4,210,299 May 1922 Jul 1980 Cylindrical Rotor Sustained ,051,659 4,401,284 Jan 1913 Aug

9 Beating Wing Sustained ,654,006 1,884,909 Dec 1927 Oct ,886,713 4,139,171 Nov 1932 Feb ,276,760 1,431,111 Aug 1918 Oct ,445,128 1,635,892 Feb 1923 Jul ,025,306 1,273,267 May 1912 Jul , ,733 Mar 1943 Apr ,931 1,023,369 Aug 1910 Apr 1912 Fluid Sustained, Lifting Thrusters, Dual Propulsion Means, Circular Configuration, Thrust Diverters ,807,428 3,033,493 Sep 1957 May ,034,747 3,066,891 May 1962 Dec ,070,328 2,834,560 Dec 1962 May ,868 1,668,052 Nov 1930 May ,690,773 3,194,513 Nov 1928 Jul ,142,456 3,397,853 Jul 1964 Aug ,410,507 3,774,865 Nov 1968 Nov 1973 Series III: Aircraft, Lighter-than-Air Box File Description Date ,996 3,905,565 Sep 1866 Sep 1975 Airships with Sustaining Wings ,414 1,259,804 Jun 1874 Mar ,289,402 4,085,912 Dec 1918 Apr 1978 Airship and Helicopter Sustained ,615,002 4,695,012 Jan 1927 Sep , ,200 Mar 1948 Sep ,389 4,114,837 Oct 1919 Sep 1978 Airship and Paddle Wheel Sustained ,238 2,160,850 Nov 1878 Jun 1939 Airship and Beating Wing Sustained ,107 2,611,558 Jul 1868 Sep 1952 Airship and Fluid Sustained , ,550 Oct 1898 Jun 1951 Airships ,025,662 1,472,076 May 1912 Oct , ,231 May 1912 Oct

10 ,634 1,020,484 May 1900 Mar ,477,338 2,126,188 Dec 1923 Aug ,149,844 4,534,525 Mar 1939 Aug 1985 Balloons ,900,147 3,288,398 Aug 1959 Nov ,298,634 4,711,416 Jan 1967 Dec ,163 2,866,263 Mar 1859 May 1959 With Parachutes ,854 4,050,653 May 1893 Sep 1977 Captive ,270 1,784,954 Jul 1871 Dec ,812,955 4,717,092 Jul 1931 Jan 1988 Series IV: Aircraft Sustentation Box File Description Date ,797 3,391,884 Nov 1861 Jul 1968 Sustaining Airfoils ,840,159 1,942,279 Jan 1932 Jan ,942,688 4,700,911 Jan 1934 Oct ,493,928 1,760,164 May 1924 May ,762,874 1,836,928 Jun 1930 Dec ,101,510 1,208,337 Jun 1914 Dec ,231,444 1,489,800 Jun 1917 Apr , ,290 Jun 1940 Jan ,697 1,096,256 Feb 1911 May ,402,358 4,718,619 June 1946 Jan 1988 Lifting Fuselages ,318 4,440,361 Aug 1942 Apr 1984 Lifting Struts ,211 2,135,096 Mar 1946 Nov 1938 Resiliently Mounted ,181 4,534,526 Sep 1931 Aug 1985 Rotatable ,067 4,596,367 Mar 1946 Jun ,504,684 4,017,041 Apr 1950 Apr

11 ,125,738 2,488,991 Aug 1938 Nov ,105 1,868,832 Apr 1949 Jul ,877,474 2,041,794 Sep 1932 May ,832,346 3,794,275 Nov 1931 Feb ,800,746 1,846,562 Apr 1931 Feb ,848,809 1,897,669 Mar 1932 Feb ,600,834 1,799,910 Sep 1926 Apr ,412 3,845,918 Jan 1935 Nov ,721,406 3,874,617 Mar 1973 Apr ,880,384 4,019,696 Apr 1975 Apr ,141,637 3,441,236 Jul 1964 Apr ,442,470 4,007,896 May 1969 Feb ,730,313 2,974,903 Jan 1956 Mar ,974,904 3,140,066 Mar 1961 Jul ,445,833 2,563,298 Jul 1948 Aug ,563,453 2,708,556 Aug 1951 May ,333,482 2,377,386 Nov 1943 Jun ,379,274 2,438,309 Jun 1945 Mar ,205,479 2,329,177 Jun 1940 Sep ,104,006 2,152,053 Jan 1938 Mar ,152,835 2,198,893 Apr 1939 Apr ,902,133 2,004,256 Mar 1933 Jun ,005,965 2,099,368 Jun 1935 Nov ,814,829 2,231,524 Jul 1931 Feb ,241,196 3,184,187 May 1941 May ,204,892 3,980,257 Sep 1965 Sep ,696 1,507,588 May 1943 Sep ,558,089 1,793,349 Oct 1925 Feb ,323,542 3,994,452 July 1943 Nov ,710,672 1,848,368 Apr 1939 Mar ,856,578 2,289,704 May 1932 Jul ,511 1,412,455 Jan 1946 Apr ,413,553 1,697,674 Apr 1922 Jan 1929 Arrangement ,199,215 1,295,398 Sep 1916 Feb ,296,089 1,358,487 Mar 1919 Nov ,022,777 1,075,791 Apr 1912 Oct ,076,377 1,189,610 Oct 1913 Jul , ,289 Jan 1939 Jul ,810 1,014,082 Apr 1910 Jan ,402,311 4,691,879 Jun 1946 Sep ,754,529 1,879,857 Apr 1930 Sep ,881,008 2,363,550 Oct 1932 Nov

12 ,362,070 1,507,527 Dec 1920 Sep 1924 Variable ,508,604 1,745,749 Sep 1924 Feb ,915,261 3,480,237 Dec 1959 Nov ,481,562 4,720,061 Dec 1969 Jan ,307,133 2,699,300 Jun 1919 Jan ,771 1,290,847 Sep 1910 Jan 1919 Dihedral ,766 3,330,501 Oct 1909 Jul 1967 Incidence ,510,317 1,798,665 Sep 1924 Mar ,080,726 1,295,649 Dec 1913 Feb ,303,695 1,492,506 May 1919 Apr ,181 1,011,386 Sep 1931 Dec ,012,836 2,792,191 Dec 1911 May ,912,191 4,596,368 Nov 1959 Jun ,802,825 2,004,214 Apr 1931 Jun ,010,549 2,788,182 Aug 1935 Apr 1957 Foldering ,707,084 4,717,093 Apr 1955 Jan ,958,486 2,290,850 May 1934 Jul ,343,645 2,938,681 Mar 1944 May ,701,298 1,940,836 Feb 1929 Dec ,777 1,316,280 Sep 1942 Sep ,324,996 1,682,263 Dec 1919 Aug 1928 Series V: Aircraft Propulsion and Steering on Land or Water Box File Description Date ,732,151 2,974,905 Jan 1956 Mar ,974,906 4,470,564 Mar 1961 Sep ,254,260 2,508,057 Sep 1941 May ,509,095 4,314,681 May 1950 Feb ,503,297 1,769,393 Jul 1924 Jul ,771,724 4,730,788 Jul 1930 Mar ,674 1,044,945 Sep 1945 Nov ,049,865 1,481,707 Jan 1913 Jan 1924 Aircraft, Steering Propulsion ,947,501 1,693,557 Aug 1960 Nov

13 ,727,561 2,491,042 Sep 1921 Dec ,250 1,009,157 Jul 1904 Nov ,012,532 1,187,309 Dec 1911 Jun 1916 Fluid ,395,435 3,031,157 Feb 1946 Apr ,041,015 4,643,374 Jun 1962 Feb ,963 1,581,336 Apr 1882 Apr ,599,496 2,062,018 Sep 1926 Nov 1936 Aircraft Power Plants ,797,785 4,093,157 Mar 1974 Jun ,131,249 4,696,442 Dec 1978 Sep ,755,040 3,181,818 Jul 1956 May ,186,661 3,540,682 Jun 1965 Nov ,583,661 4,378,097 Jun 1971 Mar ,207,242 2,388,806 Jul 1940 Nov ,390,161 2,671,620 Dec 1945 Mar ,656 1,785,633 Jul 1945 Dec ,799,779 2,196,828 Apr 1931 Apr 1940 Mounting ,457 1,382,387 May 1932 Jun ,383,157 1,977,616 Jun 1921 Oct ,013,246 4,725,019 Mar 1977 Feb ,001,158 2,619,301 May 1935 Nov ,623,713 3,979,087 Dec 1952 Sep 1976 Arrangement ,307,654 3,228,630 Jan 1943 Jan ,901,734 2,077,708 Mar 1933 Apr ,081,436 2,288,820 May 1937 Jul ,802,915 1,854,706 Apr 1931 Apr ,855,652 1,896,270 Apr 1932 Feb ,603,134 1,749,272 Oct 1926 Mar ,754,192 1,799,778 Apr 1930 Apr ,603,134 1,749,272 Oct 1926 Mar ,754,192 1,799,778 Apr 1930 Apr ,550 1,364,731 Feb 1923 Jan ,373,409 1,599,496 Apr 1921 Sep 1926 Tilting ,119,369 4,496,120 May 1938 Jan ,932 1,714,416 Apr 1936 May

14 ,726,062 2,088,692 Aug 1929 Aug 1937 Radiator Arrangement ,208,984 4,504,030 Jul 1940 Mar ,677 1,545,505 Mar 1940 Jul ,547,383 2,175,432 Jul 1925 Oct 1939 Auxiliary ,250 1,779,644 Oct 1909 Oct ,781,081 4,717,095 Nov 1930 Jan 1988 High Altitude ,272 2,022,900 Feb 1943 Dec ,063,477 3,369,777 Dec 1936 Feb 1968 Transmission of Power ,284,473 4,605,185 May 1942 Aug ,432,445 1,761,077 Oct 1922 Jun ,763,409 2,229,153 Jun 1930 Jan ,327,529 1,122,171 Jan 1920 Dec ,118, ,924 Nov 1914 Jun 1947 Power Plant Using Airship Gas as Fuel ,915 2,078,532 Aug 1872 Apr 1937 Aircraft Propulsion ,875 4,697,761 Apr 1945 Oct 1987 Launching ,306 1,388,361 Apr 1957 Aug ,398,729 1,749,357 Nov 1921 Mar ,756,747 1,898,884 Apr 1930 Feb ,921,839 2,197,300 Aug 1933 Apr ,232,564 4,488,692 Feb 1966 Dec ,452,618 2,696,955 Nov 1948 Dec ,703,211 2,845,237 Mar 1955 Jul ,053 2,379,186 May 1904 Jun ,379,267 2,449,554 June 1945 Sep ,855,165 3,305,195 Oct 1958 Feb ,350,037 4,738,414 Oct 1967 Apr 1988 Manual ,250,213 3,964,697 Dec 1917 Jun , ,579 Oct 1869 May ,012,767 68,789 Dec 1911 Sep

15 Screw ,852,927 2,055,585 Apr 1932 Sep ,063,030 4,676,459 Dec 1936 Jun ,360,976 1,740,362 Nov 1920 Dec ,754,192 1,847,866 Apr 1930 Mar ,573 1,064,162 Mar 1927 Jun ,069,688 1,340,960 Aug 1913 May 1920 Tilting ,725,724 1,889,766 Aug 1929 Dec ,897,756 4,546,938 Feb 1933 Oct ,229,713 1,389,471 Jun 1917 Aug ,392,763 1,687,203 Oct 1921 Oct ,667 1,014,430 May 1943 Jan ,014,643 1,189,680 Jan 1912 Jul 1916 Body Encircling ,266 2,558,501 Jan 1901 Jun 1951 Elongated ,321 2,341,577 Oct 1905 Feb 1944 Contra-Propeller Arrangement ,263,757 4,426,049 Apr 1918 Jan 1984 Paddle Wheel ,334 1,348,743 Jan 1878 Aug ,362,466 2,501,315 Dec 1920 Mar 1950 Reciprocating Propeller ,365 1,464,233 Oct 1865 Aug 1923 Beating Wing , ,623 Jan 1884 May ,013,560 4,081,155 Jan 1912 Mar ,502,045 3,502,288 Mar 1950 Mar ,828,819 2,041,789 Oct 1931 May ,041,790 2,488,174 May 1936 Nov ,179,991 1,133,609 Feb 1916 Mar ,133,660 15,922 Mar 1915 Sep ,133,660 15,922 Mar 1915 Sep 1924 Explosive Jet ,501,078 3,907,222 Mar 1950 Sep

16 ,142, ,729 Jan 1939 Feb ,522, ,112 Jan 1925 Mar 1946 Aircraft Control ,110,576 2,402,311 Mar 1938 Jun ,402,358 2,594,766 Jun 1946 Apr ,063,432 1,217,679 Jun 1913 Feb ,228,380 2,098,877 May 1917 Nov ,276 1,011,620 Feb 1945 Dec ,012,540 1,044,997 Dec 1911 Nov ,620,683 3,341,154 Dec 1952 Sep ,362,660 4,721,271 Jan 1968 Jan 1988 Automatic ,953,325 3,174,710 Sep 1960 Mar ,175,787 4,725,020 Mar 1965 Feb ,311,642 2,499,664 Feb 1943 Mar ,508,883 2,947,502 May 1950 Aug ,303,105 2,079,677 May 1919 May ,091,306 2,299,117 Aug 1937 Oct ,295 1,078,713 Dec 1939 Nov ,085,063 1,293,312 Jan 1914 Feb 1919 Multiple-Axis Altitude Control ,350,751 2,408,819 Jun 1944 Oct ,410,097 2,439,750 Oct 1946 Apr ,954,727 2,158,584 Apr 1934 May ,162,862 2,323,311 Jun 1939 Jul ,752,119 1,847,088 Mar 1930 Mar ,853,145 1,451,799 Apr 1932 Jan ,351,538 1,748,502 Aug 1920 Feb ,233 1,158,333 Jul 1934 Oct ,169,695 1,350,214 Jan 1918 May ,053,485 3,092,356 Sep 1962 Jun ,092,357 3,160,369 Jun 1963 Dec ,952,424 2,978,210 Sep 1960 Apr ,979,289 3,010,681 Apr 1961 Nov ,014,677 3,052,428 Dec 1961 Sep ,875,964 2,929,585 Mar 1959 Mar ,930,549 2,948,496 Mar 1960 Aug ,775,420 2,833,495 Dec 1956 May ,833,496 2,873,932 May 1958 Feb ,670,157 2,710,730 Feb 1954 Jun ,717,132 2,774,559 Sep 1955 Dec

17 ,625,348 2,665,861 Jan 1953 Jan ,604,074 2,623,716 Jul 1952 Dec ,570,905 2,603,780 Oct 1951 Jul ,503,346 2,568,719 Apr 1950 Sep ,476,301 2,474,618 Jul 1949 Jun ,801,049 3,873,050 Apr 1974 Mar ,880,385 3,945,593 Apr 1975 Mar ,351,315 3,463,422 Nov 1967 Aug ,467,344 3,622,105 Sep 1969 Nov ,627,236 3,788,579 Dec 1971 Jan ,164,340 3,268,185 Jan 1965 Aug ,164,340 3,268,185 Jan 1965 Aug ,269,675 3,666,213 Aug 1966 May 1972 Fluid ,400,701 3,063,633 May 1946 Nov ,071,377 4,738,415 Jan 1963 Apr ,139,878 2,293,889 Dec 1938 Aug ,297,412 2,400,126 Sep 1942 May ,306,318 1,867,334 Jun 1919 Jul ,887,335 2,126,855 Nov 1932 Aug ,071 1,291,989 May 1939 Jan 1919 Gyroscope Actuated ,936 1,312,086 Feb 1955 Aug ,335,055 1,992,086 Mar 1920 Feb ,007,515 2,307,941 Jul 1935 Jan ,323,151 2,677,514 Jun 1943 May ,729,407 3,563,501 Jan 1956 Feb 1971 Gravity Actuated ,942,807 3,670,995 Jun 1960 Jun ,500,572 1,832,254 Jul 1924 Nov ,838,194 2,809,794 Dec 1931 Oct ,175,307 1,247,727 Mar 1916 Nov ,257,212 1,498,411 Feb 1918 Jun ,257,212 1,498,411 Feb 1918 Jun ,040,434 1,075,533 Oct 1912 Oct ,076,574 1,174,679 Oct 1913 Mar ,994 1,005,026 Feb 1925 Oct ,007,926 1,039,115 Nov 1911 Sep 1912 Operated by Landing ,148,861 3,942,748 Aug 1915 Mar

18 Vane Operated ,383,779 4,124,180 Aug 1945 Nov ,775,415 1,945,520 Sep 1930 Feb ,956,755 2,379,977 May 1934 Jul ,891 1,302,947 Oct 1938 May ,315,647 1,774,474 Sep 1919 Aug 1930 Aircraft on its Landing Course ,103,195 1,129,874 Jul 1914 Mar ,130,125 1,185,824 Mar 1915 Jun ,356 1,009,017 Mar 1963 Nov ,009,157 1,034,556 Nov 1911 Aug ,578,270 3,954,231 May 1971 May ,960,348 4,175,722 Jun 1976 Nov ,035,687 1,062,055 Aug 1912 May ,062,772 1,098,130 May 1913 May ,801,060 3,106,371 Oct 1963 Jul ,107,885 3,576,302 Oct 1963 Apr ,506,222 2,628,045 May 1950 Feb ,630,284 2,783,006 Mar 1953 Feb ,271,509 2,365,728 Jan 1942 Feb ,396,309 2,505,020 Mar 1946 Apr ,081,436 2,260,952 May 1937 Oct ,900,068 2,002,528 Mar 1933 May ,005,061 2,076,327 Jun 1935 Apr ,830,429 1,896,999 Nov 1931 Feb ,702,184 1,829,098 Feb 1929 Oct ,384,608 1,540,706 Jul 1921 Jun ,550,739 1,694,496 Aug 1925 Dec ,190,374 1,313,681 Jul 1916 Aug ,318,070 2,857,120 Oct 1919 Oct 1958 By Steering or Yaw ,177,382 4,114,843 Mar 1916 Sep 1978 Vertical Glide Path Control ,515,475 4,192,476 Jul 1950 Mar ,728 2,226,821 Mar 1946 Dec ,227,375 2,487,116 Dec 1940 Nov ,327,427 3,931,943 Aug 1943 Jan ,081,420 1,862,280 Dec 1913 Jun ,873,906 2,267,726 Aug 1932 Dec 1941 Rudders and Empennage 18

19 ,845,307 1,945,289 Feb 1932 Jan ,963,461 2,099,229 Jun 1934 Nov ,451,352 1,727,047 Apr 1923 Sep ,731,757 1,844,965 Oct 1929 Feb ,075 1,075,969 Jul 1943 Oct ,076,218 1,270,339 Oct 1913 Jun ,274,767 1,443,100 Aug 1918 Jan ,391,662 2,693,325 Dec 1945 Nov ,697,568 4,598,889 Dec 1954 July ,104,006 2,265,213 Jan 1938 Dec ,266,529 2,510,561 Dec 1941 Jun 1950 Rudders Universally Mounted ,012 2,687,858 Mar 1874 Aug 1954 Elevators both Front or Rear ,432 4,010,920 Apr 1908 Mar 1977 Ailerons and other Roll Control Devices, Roll Control Spoilers, Balanced Air Pressure ,053,064 2,206,475 Sep 1936 Jul ,207,387 2,337,812 Jul 1940 Dec ,651 1,018,474 Jul 1935 Feb ,019,782 1,054,484 Mar 1912 Feb ,841,804 1,891,354 Jan 1932 Dec ,892,927 2,044,357 Jan 1933 Jun ,561,619 1,761,481 Nov 1925 Jun ,763,228 1,837,132 Jun 1930 Dec ,264,485 1,396,459 Apr 1918 Nov ,403,715 1,555,247 Jan 1922 Sep ,056,844 1,152,432 Mar 1913 Sep ,153,612 1,242,295 Sep 1915 Oct ,718,366 4,729,528 Sep 1955 Mar ,352,062 2,419,161 Jun 1944 Apr ,421,374 2,666,603 Jun 1947 Jan 1954 Vertical Fins ,649 1,145,406 Mar 1939 Jul ,151,172 2,937,828 Aug 1915 May ,157,636 4,693,435 Oct 1915 Sep 1987 Stabilizing Propellers ,002,067 2,302,629 Aug 1911 Nov 1942 Stabilizing Weights ,306,318 1,839,563 Jun 1919 Jan

20 ,853,082 4,428,550 Apr 1932 Jan ,421 1,275,251 Oct 1890 Aug 1918 Ballast Storage and Release ,486 2,983,950 Oct 1875 May 1961 Ballast Making ,644 2,447,486 May 1927 Aug 1948 Airship Control ,799 4,514,057 Oct 1844 Apr 1985 Buoyancy Varying ,509,527 1,795,335 Sep 1924 Mar ,797,502 4,457,477 Mar 1931 Jul ,165 1,496,416 Aug 1861 Jun 1924 Gas Bag Inflation ,548 4,564,159 Apr 1913 Jan 1986 Gas Release ,610 4,651,956 Apr 1886 Mar 1987 Series VI: Landing Gear Box File Description Date ,417,017 1,997,906 May 1922 Apr ,010,743 3,096,051 Aug 1935 Jul ,104,084 4,645,143 Sep 1963 Feb ,002 1,054,484 Mar 1931 Feb ,055,990 1,398,466 Mar 1913 Nov 1921 Amphibian ,906,017 2,159,058 Apr 1933 May ,167,644 4,697,762 Aug 1939 Oct ,601,012 1,784,775 Sep 1926 Dec ,784,784 1,898,695 Dec 1930 Feb ,101 1,371,989 May 1939 Mar ,377,858 1,597,305 May 1921 Aug 1926 Retractable, Interconnected Elements, Strut Locks, Strut Shortening ,101,611 2,180,462 Dec 1937 Nov ,180,526 2,245,682 Nov 1939 Jun

21 ,857,888 2,014,793 May 1932 Sep ,015,920 2,095,743 Oct 1935 Oct ,656 1,554,221 Jul 1945 Sep ,587,895 2,701,695 Jun 1926 Feb ,392,622 4,720,063 Jul 1983 Jan ,903,206 3,224,714 Sep 1959 Dec ,261,574 3,693,914 Jul 1966 Sep ,511,528 2,661,171 Jun 1950 Dec ,667,316 2,896,884 Jan 1954 Jul ,425,306 2,462,992 Aug 1947 Mar ,463,351 2,510,969 Mar 1949 Jun ,351,215 2,554,938 Jun 1944 May ,255,592 2,347,847 Sep 1941 May 1944 Prerotation, Crosswind Gear ,339,865 4,723,350 Sep 1967 Mar ,690,889 3,313,501 Oct 1954 Apr ,460,387 2,677,516 Feb 1949 Mar ,110,516 2,457,899 Mar 1938 Jan ,450 2,069,994 Aug 1972 Feb 1937 Resiliently Mounted, Coil Spring, Fluid Pressure, Leaf Spring ,656 1,246,021 Jul 1923 Nov ,942,809 4,729,529 Jun 1960 Mar ,272,699 2,379,388 Feb 1942 Jun ,392,892 2,849,199 Jan 1946 Aug ,852,099 2,263,770 Apr 1932 Nov ,600,154 1,837,510 Sep 1926 Dec ,840,643 1,793,055 Jan 1932 Feb ,263,758 1,413,373 Apr 1918 Apr ,416,747 1,597,305 May 1922 Aug 1926 Water Landing ,306,269 4,655,415 Dec 1942 Apr ,400,262 1,758,866 Dec 1921 May ,774,471 2,271,065 Aug 1930 Jan ,994 1,396,974 Feb 1925 Nov 1921 Flying Boat ,204,457 4,691,881 Jun 1940 Sep ,161 1,438,986 Oct 1940 Dec ,441,563 2,194,596 Jan 1923 Mar

22 Emergency ,125,314 4,676,461 Mar 1964 Jun ,379 1,791,024 May 1937 Feb ,802,825 4,382,567 Apr 1931 May 1983 Skids ,075 2,256,541 Sep 1909 Sep ,256,542 4,558,837 Sep 1941 Dec 1985 Tail Supports ,384,054 2,578,578 Sep 1945 Dec ,827,953 2,114,839 Oct 1931 Apr ,117,786 2,459,982 May 1938 Jan ,181 1,501,608 Feb 1944 Jul ,522,672 1,813,356 Jan 1925 Jul 1931 Series VII: Retarding and Restraining Devices Box File Description Date ,614,037 3,907,224 Sep 1969 Sep ,915,415 4,674,711 Oct 1975 Jun ,123,325 3,371,890 Mar 1964 Mar ,374,970 3,604,665 Mar 1968 Sep ,501,997 2,919,872 Mar 1950 Jan ,936,977 3,118,640 May 1960 Jan ,864,137 2,391,921 Jun 1932 Jan ,395,405 2,499,666 Feb 1946 Mar ,552,283 1,731,091 Sep 1925 Oct ,737,483 1,844,506 Nov 1929 Feb ,393,996 1,164,717 Jul 1983 Dec ,164,967 1,547,564 Dec 1915 Jul 1925 Wheel Brake Arrangement ,822,997 4,640,475 Feb 1958 Feb ,917,933 2,370,597 Jul 1933 Feb ,379,847 2,794,609 Jul 1945 Jun ,056,844 1,898,836 Mar 1913 Feb ,160,525 4,061,296 Nov 1915 Dec 1977 Aerodynamic Retarders ,400,462 1,631,187 Dec 1921 Jun ,634,904 1,791,182 Jul 1927 Feb ,516 1,135,561 Mar 1903 Apr ,159,720 1,392,831 Nov 1915 Oct

23 ,802,238 1,881,159 Apr 1931 Oct ,900,631 2,189,553 Mar 1933 Feb ,561 2,611,565 Nov 1958 Sep ,612,332 3,106,372 Sep 1952 Oct ,114,523 4,696,443 Dec 1963 Sep 1987 Series VIII: Landing Field Arrangement ,147,940 3,554,470 Sep 1964 Jan ,040,535 2,510,118 May 1936 June ,522,144 3,143,322 Sep 1950 Aug ,395 1,803,507 Aug 1910 May ,807,429 1,997,945 May 1931 Apr ,556,441 4,735,381 Jan 1971 Apr ,207 1,636,354 Mar 1850 July 1927 Mooring Devices ,949,888 3,553,688 Mar 1934 Jan ,559,927 4,420,132 Feb 1971 Dec ,647,472 1,893,584 Nov 1927 Jan ,119,646 1,928,980 Dec 1914 Oct ,935,271 4,662,586 Nov 1933 May 1987 Series IX: Aircraft Structure Box File Description Date ,886,265 4,712,750 May 1959 Dec ,068,108 1,667,300 July 1913 Apr ,696,493 2,081,437 Dec 1928 May ,109,529 2,873,933 Mar 1938 Feb 1959 Load (e.g. cargo) Accomodation ,097,008 4,168,814 June 1978 Sep ,953,330 3,796,397 Sep 1960 Mar ,820,747 4,071,210 June 1974 Jan ,547,811 2,497,153 Apr 1951 Feb ,514,045 2,380,290 July 1950 July ,859,422 2,367,538 May 1932 Jan ,623 1,710,476 Apr 1944 Apr ,713,069 2,367,538 May 1929 Jan 1945 Fuselage and Body Construction ,299,858 1,428,341 Apr 1919 Sep ,801 1,294,413 May 1941 Feb

24 ,693,557 1,848,578 Nov 1928 Mar ,431,520 1,681,331 Oct 1922 Aug ,918,079 2,147,968 July 1933 Feb ,851,194 1,906,114 Mar 1932 Apr ,779,558 4,728,059 Jan 1957 Mar ,155,881 2,741,447 Apr 1939 Apr 1956 Sectional ,109,891 4,591,114 Sep 1914 May 1986 Shields and other Protective Devices ,452 2,295,345 Jan 1952 Sep ,924,403 4,655,416 Feb 1960 Apr ,317,285 2,420,946 Apr 1943 May ,424,245 2,932,533 Jul 1947 Apr 1958 Seats and Safety Belts, Ejection Seats ,900,150 3,079,111 Aug 1959 Feb ,079,112 3,285,543 Feb 1963 Nov ,304, Dec 1942 Jan ,542,248 2,861,760 Feb 1951 Nov ,612 1,816,219 Jul 1964 Jul ,830,059 2,292,414 Nov 1931 Aug ,912,203 4,465,250 Oct 1975 Aug ,462,253 4,736,911 Jul 1984 Apr ,312,430 3,556,442 Apr 1967 Jan ,561,703 3,897,034 Feb 1971 Jul ,079,112 3,285,543 Feb 1963 Nov 1966 Airfoil Construction ,391,514 2,574,980 Dec 1945 Nov ,579,605 4,725,021 Dec 1951 Feb ,341,997 2,389,917 Feb 1944 Nov ,956,823 2,102,095 May 1934 Dec ,110,752 3,436,038 Mar 1938 Apr ,822,196 1,858,194 Sep 1931 May ,869,871 2,945,655 Aug 1932 Jul ,713,749 1,785,477 May 1929 Dec ,787,823 1,818,971 Jan 1931 Aug ,400,620 1,526,198 Dec 1921 Feb ,535,526 1,697,151 Apr 1925 Jan ,173 1,281,442 Mar 1886 Oct ,291,678 1,397,761 Jan 1919 Nov

25 Sectional ,048,509 1,976,480 Dec 1912 Oct ,996,281 4,667,906 Apr 1935 May 1987 Airship Hull Construction ,109,529 4,102,519 Mar 1938 Jul ,631,908 1,729,925 Jun 1927 Aug ,729,925 2,091,580 Oct 1929 Aug ,885 1,320,867 Aug 1924 Nov ,343,428 1,623,951 Jun 1920 Apr 1927 Airship Skin Construction ,548 4,529,153 Apr 1913 Jul 1985 Airship Load Attachment ,667 1,302,007 Feb 1863 Apr ,304,858 4,696,444 May 1919 Sep 1917 Airship Gas Cell Construction and Arrangement ,124 3,706,433 May 1874 Dec 1972 Fire Prevention Devices ,392,835 2,938,687 Jan 1946 May ,942,813 3,941,337 Jun 1960 Mar ,852,146 2,387,708 Apr 1932 Oct ,427,448 1,376,584 May 1921-Aug ,378,713 1,844,765 May 1921 Feb 1932 Aerodynamic Resistance Reducing ,490 1,896,222 Dec 1938 Feb ,540,143 4,736,913 Sep 1985 Apr ,467,348 4,489,905 Sep 1969 Dec ,908,820 2,352,790 May 1933 Jul ,355,829 3,984,070 Aug 1944 Oct 1976 Joints and Connections ,322,104 4,390,153 Jun 1943 Jun ,557,855 2,189,201 Oct 1925 Feb ,944 1,315,695 Jun 1911 Sep ,322,868 1,549,721 Nov 1919 Aug 1925 Skin Fastening Devices ,011,106 3,920,206 Dec 1911 Nov 1975 Materials of Construction ,106,761 3,140,846 Feb 1938 Jul

26 ,355 1,469,220 Feb 1932 Oct ,497,167 2,067,839 Jun 1924 Jan 1937 Ice Prevention, Flexible Surfaces ,695,146 2,594,118 Nov 1954 Apr ,599,059 2,930,554 Jun 1952 Mar ,363,592 2,422,746 Nov 1944 Jun ,425,088 2,498,072 Aug 1947 Feb ,106,323 2,233,031 Feb 1941 Jan ,237,175 2,359,787 Apr 1941 Oct ,928 1,838,404 Jan 1976 Dec ,848,555 2,098,566 Mar 1932 Nov ,957,662 4,358,075 Oct 1960 Nov ,386,749 4,399,967 Jun 1983 Apr 1988 Fuel Supply, Aircraft Refueling, Fuel Balancing System ,067,972 4,444,366 Dec 1962 Apr ,400,248 2,634,927 May 1946 Apr ,636,701 4,398,685 Apr 1953 Aug ,101,743 2,397,184 Dec 1937 Mar ,760,865 1,840,643 Jun 1930 Jan ,840,986 2,069,996 Jan 1932 Feb ,379 1,381,611 May 1937 Jun ,386,712 1,746,996 Aug 1921 Feb ,026,503 4,725,022 May 1977 Feb 1988 Material Discharging and Diffusing ,712 2,248,308 July 1941 Apr ,250,762 2,895,693 July 1941 July ,801,061 3,061,246 July 1957 Oct ,954,948 3,533,582 Oct 1960 Oct ,559,930 4,671,472 Feb 1971 Jun 1987 Passenger or Cargo Loading or Discharging ,402,283 2,723,093 Jun 1946 Nov ,734,705 3,289,981 Feb 1956 Dec ,330,509 4,456,207 Jul 1967 Jun ,361 2,064,729 Jun 1911 Dec ,065,990 2,913,198 Dec 1936 Nov ,511,457 3,784,131 May 1970 Jan ,787,012 4,060,213 Jan 1974 Nov ,081,157 4,378,098 Mar 1978 Mar ,379,534 4,609,167 Apr 1983 Sep

27 ,520,975 4,653,707 Jun 1985 Mar 1987 Series X: Safety Lowering Devices Box File Description Date ,281 1,572,889 Nov 1910 Feb ,617,263 1,890,083 Feb 1927 Dec ,901,957 2,404,673 Mar 1933 Jul ,408,246 2,693,328 Sep 1946 Nov ,700,517 3,160,374 Jan 1955 Dec ,168,266 3,534,931 Feb 1965 Oct ,550,885,4,440,366 Dec 1970 Apr 1984 Entire Aircraft ,173,948 1,023,233 Feb 1916 Apr ,025,891 1,191,501 May 1912 Jul ,227,650 1,379,264 May 1917 May ,391,368 1,597,918 Sep 1921 Aug ,621,019 1,763,498 Mar 1927 Jun ,765,094 1,849,970 Jun 1930 Mar ,853,874 2,101,351 Apr 1932 Dec ,118,603 2,812,147 May 1938 Nov ,934,294 4,709,884 Apr 1960 Dec 1987 Passenger Compartment ,251,896 2,077,910 Jan 1918 Apr ,087,458 4,699,336 July 1937 Oct ,024,407 2,671,622 Apr 1912 Mar 1954 Seat ,699,305 4,709,885 Jan 1955 Dec 1987 Parachutes ,885 1,310,467 Nov 1879 July ,319,546 3,529,794 Oct 1919 Sep ,003,205 2,342,384 May 1935 Feb ,350,480 3,434,680 June 1944 Mar ,480,238 4,730,796 Nov 1969 Mar 1988 Garment Attached ,005,569 4,662,589 Oct 1911 May 1987 Aircraft Element Convertible to Parachute ,034 2,572,147 Aug 1904 Oct

28 ,024 2,942,817 Nov 1976 Jun ,307,000 2,577,047 Dec 1942 Dec ,581,808 3,152,782 Jan 1952 Oct ,167,279 3,740,008 Jan 1962 Jun ,749,337 5,705,238 Jul 1973 Nov 1987 Canopy Construction ,377 4,562,981 May 1897 Jan 1986 Storage and Release ,859 1,165,891 Apr 1947 Dec ,168,465 1,345,582 Jan 1916 July ,353,378 2,937,831 Sep 1920 May ,411,077 4,664,342 Nov 1946 May 1987 Packs ,511 1,774,513 Nov 1940 Sept ,780,104 1,988,872 Oct 1930 Jan ,005,743 2,394,295 June 1935 Feb ,396,126 2,759,066 Mar 1946 June ,760,741 4,577,817 Aug 1956 Mar 1986 Opening Devices ,366 1,596,927 Mar 1932 Aug ,617,325 1,997,112 Feb 1927 Apr ,028,777 3,120,365 Jan 1936 Feb ,124,325 4,635,881 Mar 1964 Jan 1987 Timing Mechanism ,490 2,584,164 June 1911 Feb ,606,729 4,527,758 Aug 1952 July 1985 Harness, Parachute Harness Connection, Parachute Load Releasing ,984 2,011,520 Mar 1889 Aug ,014,344 2,292,639 Sept 1935 Aug ,314,602 2,556,877 Mar 1943 June ,557,084 3,632,066 June 1951 Jan ,658,281 4,738,413 Apr 1972 Apr 1988 Control Devices ,104,995 2,490,232 July 1914 Dec ,517,488 4,378,921 Aug 1950 Apr ,780,970 4,729,530 Dec 1973 Mar

29 Kites , ,616 Dec 1946 June ,838 1,381,264 June 1907 June ,425,419 2,203,150 Aug 1922 June ,208,786 2,873,077 July 1940 Feb ,903,207 3,894,704 Sep 1959 July ,918,633 4,685,642 Nov 1975 Aug ,354,647 4,736,914 Oct 1982 Apr 1988 Airplane Type (Kites) ,652 2,240,881 Mar 1950 May ,257,298 4,168,816 Sep 1941 Sep 1979 Accessories (Kites) ,056 4,629,147 Nov 1871 Dec