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Patents > IPCs : IPC B64C27/04 or IPC B64C33/02 or IPC CPC B64C13/00

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Tech fields:
propulsion (59) · flapping (58) · airplane (54) · helicopter (51) · None (43) · wings (38) · Navigation (37) · design (33) · propellers (33) · frame (30) · Ornithopter (30) · control (29) · hybrid (27) · stability (21) · ascension (19) · LTA (17) · construction (15) · steering (14) · Lift (14)
Full specification filed date:
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Granted:
Supplementary to patent:
None (217) · Patent FR-1912-446040 (4) · Patent BE-1910-12-28-Muehter (3) · Patent FR-1909-420004 (2) · Patent FR-1915-502520 (2) · Patent FR-1915-478440 (2) · Patent DE-1910-09-03 Richard Blum (2) · Patent US-1911-1011761 (2) · Patent FR-1908-407090 (2) · Patent FR-1908-403650 (2)
Related to aircraft:
Patent agent:
None (102) · None (20) · Armengaud jeune (12) · Marks & Clerk (7) · J. Germain (7) · Schwab (5) · Haseltine, Lake & Co. (5) · C. Blétry (5) · Brandon frères (5) · Lavoix et Moses (4) · G. de Mestral et F. Harle (4) · Y. Rabilloud et fils (4) · Browne & Co. (4)
National tech categories:
FR 6.4 (154) · None (68) · DE 77h.10 (17) · FR 6.3 (16) · DE 77 (14) · USPC 244/22 (9) · USPC 244/72 (7) · USPC 244/233 (4) · DE 77h.6 (3) · USPC 244/78.1 (3) · GB 4 propelling (2) · USPC 244/222 (2) · USPC 244/80 (2) · USPC 244/90R (2) · GB 4 steering (2) · GB 4 propel & steer (2) · USPC 91/384 (2) · FR 6.2 (2) · DE 77h.5 (2) · DE 77h (2)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C33/02 (158) · CPC B64C2700/6281 (83) · CPC B64C27/04 (62) · CPC B64C13/00 (38) · CPC B64C27/12 (21) · CPC B64C2700/6256 (15) · CPC B64C27/20 (10) · CPC B64C27/52 (6) · None (6) · CPC B64C29/0025 (4) · CPC B64C33/00 (4) · CPC B64C2700/6259 (3) · CPC B64C39/06 (3) · CPC B64C33/025 (3) · CPC B64C39/024 (2) · CPC B64C2700/6273 (2) · CPC B64C2201/108 (2) · CPC B64C27/00 (2) · CPC B64C23/005 (2) · CPC B64C2201/024 (2)
First filing:
Citations from after 1930:
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