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Patents > IPCs : IPC B63H1/16 or IPC B64C1/00 or IPC B64C33/00

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Tech fields:
None (217) · stability (189) · airplane (157) · automatic stability (57) · design (49) · frame (49) · wings (37) · construction (33) · flapping (32) · control (32) · Aerodynamics (28) · gyroscope (27) · fuselage (26) · equilibrium (25) · subsystem (24) · ornithopter (23) · Propulsion (20) · navigation (19) · rudder (19) · Lift (18)
Full specification filed date:
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Supplementary to patent:
None (365) · Patent AT-1912-75092 (3) · Patent GB-1909-8531 (3) · Patent IT-1913-03-20 Vigilio Baldo (3) · Patent FR-1910-435648 (3) · Patent DE-1911-11-16 Otto Albin Budig (3)
Related to aircraft:
Patent agent:
None (120) · None (33) · Armengaud jeune (26) · J. Bonnet-Thirion (12) · E. Blétry (11) · Boult, Wade & Tennant (11) · Haseltine, Lake & Co. (10) · Charles Dony (10) · Schwab (9) · Weismann et Marx (9) · Hippolyte Josse (8) · Lavoix et Mosès (8) · J. Germain (7) · De Bongé (7) · P. Follin (7) · Herbert Haddan & Co. (7) · Brandon frères (7) · Marks & Clerk (7)
National tech categories:
FR 6.4 (331) · None (173) · DE 77h.5 (15) · USPC 244/22 (13) · USPC 244/11 (7) · USPC 244/119 (5) · FR 6.3 (4) · USPC 244/79 (2) · USPC 244/72 (2) · USPC 244/64 (2) · USPC 244/63 (2) · USPC 244/177 (2) · DE 77h.10 (2)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C17/00 (295) · CPC B64C2700/6218 (204) · CPC B64C1/00 (88) · CPC B64C17/06 (72) · CPC B64C33/00 (69) · CPC B64C2700/6216 (51) · CPC B64C2700/6219 (37) · CPC B64C2700/6228 (35) · CPC B64C2001/0063 (30) · CPC B64C2001/0081 (19) · CPC B64C33/02 (14) · CPC B64C1/061 (10) · CPC B64C2700/6225 (10) · CPC B64C17/04 (7) · CPC B64C1/068 (6) · CPC B64C1/06 (6) · CPC B64C2700/6223 (5) · CPC B64C1/08 (5) · CPC B64C2700/6204 (5)
First filing:
Citations from after 1930:
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