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Patents > Application number: None & Publication date: 1920 - 1929 & Number of claims: 2-4

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Office:
Inventors:
None (31) · Ernst Heinkel (7) · Oscar Gerhardt (3) · Detlev Zickler (2) · Gabriel Letsch (2) · Jakob Haw (2) · Eduard Zaparka (2) · John Arthur Weis (2) · Roger Courtois-Suffit (2) · Georges Provost (2)
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Applicant is inventor:
Tech fields:
airplane (34) · frame (19) · design (14) · Wings (13) · subsystem (10) · propellers (9) · Instrument (8) · construction (8) · military (7) · safety (6) · control (6) · LTA (6) · aerodynamics (5) · propulsion (5) · parachutes (4) · triplane (4) · propeller (4) · airship (4)
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Supplementary to patent:
None (44) · Patent DE-1916-10-07 Oscar Gerhardt (2) · Patent DE-1917-02-16 Oscar Gerhardt (2)
Related to aircraft:
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IPCs:
None (36) · IPC B64C3/00 (5) · IPC B64C35/00 (3) · IPC B64D27/00 (3) · IPC B64C3/56 (2) · IPC B64B1/64 (2) · IPC B64D17/80 (2) · IPC B64C3/54 (2) · IPC B64D27/04 (2) · IPC B64D7/02 (2)
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Citations from after 1930:
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