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Patents > Granted: Yes & IPCs : IPC B63H1/16 or IPC B64C1/00

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Tech fields:
None (198) · stability (174) · Airplane (140) · automatic stability (56) · design (36) · frame (33) · Construction (29) · Control (27) · gyroscope (26) · fuselage (25) · Aerodynamics (24) · subsystem (23) · wings (23) · equilibrium (23) · rudder (14) · propellers (11) · lift (11) · balance (11) · steering (10) · navigation (10)
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Supplementary to patent:
None (298) · Patent GB-1909-8531 (3) · Patent FR-1910-435648 (3) · Patent IT-1913-03-20 Vigilio Baldo (3) · Patent DE-1911-11-16 Otto Albin Budig (3)
Related to aircraft:
Patent agent:
None (87) · None (28) · Armengaud jeune (23) · Boult, Wade & Tennant (11) · J. Bonnet-Thirion (11) · Charles Dony (10) · Haseltine, Lake & Co. (10) · Schwab (9) · E. Blétry (8) · Hippolyte Josse (7) · J. Germain (7) · Herbert Haddan & Co. (7) · Marks & Clerk (7) · De Bongé (7) · Lavoix et Mosès (7) · Brandon frères (6) · P. Follin (6) · Paul Coulomb (6) · Abel & Imray (6) · Dom. Casalonga (6)
National tech categories:
FR 6.4 (298) · None (142) · DE 77h.5 (14) · USPC 244/119 (5) · USPC 244/79 (2) · FR 6.3 (2) · USPC 244/177 (2)
IPCs: (Click arrow to add another value)
CPCs:
CPC B64C17/00 (287) · CPC B64C2700/6218 (200) · CPC B64C1/00 (87) · CPC B64C17/06 (70) · CPC B64C2700/6216 (49) · CPC B64C2700/6219 (37) · CPC B64C2700/6228 (35) · CPC B64C2001/0063 (29) · CPC B64C2001/0081 (19) · CPC B64C2700/6225 (10) · CPC B64C1/061 (9) · CPC B64C1/06 (6) · CPC B64C1/068 (6) · CPC B64C17/04 (6) · CPC B64C1/08 (5) · CPC B64C2700/6204 (5) · CPC B64C1/12 (4) · CPC B64C2700/6223 (4)
First filing:
Citations from after 1930:
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