Drilldown: Patents

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Patents > Applicant is inventor: Yes & Grant date: 1920 - 1929 & Patent agent: None

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Tech fields:
None (182) · airplane (76) · frame (46) · design (39) · wings (38) · construction (36) · propellers (28) · subsystem (18) · fuselage (17) · aerodynamics (16) · propulsion (16) · control (14) · propeller (13) · stability (12) · biplane (11) · LTA (10) · safety (9) · lift (8) · rudder (8)
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Supplementary to patent:
None (323) · Patent FR-1912-455471 (2) · Patent DE-1916-332540 (2) · Patent FR-1915-525800 (2) · Patent DE-1921-384750 (2)
Related to aircraft:
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National tech categories:
None (203) · DE 77h.5 (51) · HU V/h (25) · DE 77h.9 (12) · FR 6.4 (11) · DE 77h.6 (11) · AT 77d (9) · NL 62 (7) · DE 77h.7 (5) · RU 62b (3) · NL 62.6 (3) · NL 62.7 (3)
IPCs:
None (229) · IPC B64C3/00 (23) · IPC B64C13/00 (11) · IPC B64C1/00 (10) · IPC B64C35/00 (9) · IPC B64C17/00 (8) · IPC B64C3/18 (7) · IPC B64C11/20 (6) · IPC B64C23/00 (6) · IPC B64C11/00 (6) · IPC B64C1/06 (5) · IPC B64C9/02 (5) · IPC CPC B64C13/00 (4) · IPC B64C25/00 (4) · IPC B64C27/04 (4) · IPC B64C1/26 (3) · IPC B64C3/14 (3) · IPC B64B1/00 (3)
CPCs:
None (59) · CPC B64C3/00 (32) · CPC B64C13/00 (19) · CPC B64C17/00 (18) · CPC B64C39/00 (16) · CPC B64C23/005 (16) · CPC B64C2700/6233 (14) · CPC B64C2700/6295 (14) · CPC B64C2700/6235 (12) · CPC B64C35/00 (12) · CPC B64C2700/6256 (10) · CPC B64C2700/6212 (9) · CPC B64C2001/0081 (9) · CPC B64C11/20 (9) · CPC B64C1/00 (9) · CPC B64C2700/6274 (8) · CPC B64C2001/0063 (8) · CPC B64C33/00 (7) · CPC B64C3/18 (7)
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Cites these patents:
Citations from after 1930:
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