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Patents > IPCs : IPC B64C17/00 or IPC B64C25/00 or IPC B64C27/04

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Tech fields:
stability (354) · airplane (327) · automatic stability (157) · Design (112) · Frame (90) · control (85) · None (83) · landing (76) · aerodynamics (65) · equilibrium (55) · wings (54) · wheels (52) · construction (51) · subsystem (50) · helicopter (49) · chassis (48) · propellers (38) · pendulum (31) · propulsion (31) · lift (31)
Full specification filed date:
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Supplementary to patent:
None (456) · Patent FR-1908-396249 (5) · Patent FR-1909-420322 (4) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent FR-1915-478440 (3) · Patent FR-1910-415470 (3) · Patent GB-1909-8531 (3) · Patent DE-1911-11-16 Otto Albin Budig (3) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent IT-1915-150227 (3) · Patent FR-1912-442419 (3)
Related to aircraft:
Patent agent:
None (144) · Armengaud jeune (41) · None (37) · Marks & Clerk (22) · E. Blétry (18) · Charles Dony (17) · J. Bonnet-Thirion (15) · J. Germain (15) · Lavoix et Moses (12) · Hippolyte Josse (11) · Matray frères et Cie (11) · Schwab (10) · Weismann et Marx (9) · Herbert Haddan & Co. (9) · L. Chassevent (9) · Haseltine, Lake & Co. (9) · J. Fayollet (9) · P. Follin (8) · Abel & Imray (7) · Brandon freres (7)
National tech categories:
FR 6.4 (459) · None (203) · USPC 244/80 (12) · FR 6.3 (11) · DE 77h.5 (6) · DE 77h.9 (6) · USPC 244/100R (6) · USPC 244/93 (3) · USPC 244/104R (3) · USPC 244/102R (3) · USPC 244/50 (2) · USPC 244/177 (2) · USPC 244/104CS (2) · DE 77 (2)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C17/00 (503) · CPC B64C2700/6218 (190) · CPC B64C2700/6212 (110) · CPC B64C2700/6281 (82) · CPC B64F2700/6226 (73) · CPC B64C25/06 (73) · CPC B64C2700/6214 (67) · CPC B64C27/04 (62) · CPC B64C25/62 (41) · CPC B64C2700/6219 (38) · CPC B64C25/64 (29) · CPC B64C25/52 (27) · CPC B64C27/12 (21) · CPC B64C25/54 (21) · CPC B64C2700/6215 (16) · CPC B64C25/60 (9) · CPC B64C2700/6211 (7) · CPC B64C27/20 (7) · CPC B64C27/52 (6)
First filing:
Citations from after 1930:
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