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Patents > Inventor location: None & CPCs : CPC B63H1/12 or CPC B64C17/00

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Tech fields:
stability (385) · Airplane (279) · None (219) · automatic stability (165) · design (83) · Control (80) · aerodynamics (60) · equilibrium (55) · frame (52) · subsystem (46) · wings (42) · rudder (36) · construction (29) · pendulum (26) · propellers (25) · lift (23) · balance (23) · navigation (23) · propeller (19) · steering (18)
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Supplementary to patent:
None (554) · Patent FR-1908-396249 (5) · Patent US-1908-1077750 (4) · Patent GB-1909-8531 (4) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent US-1908-1081147 (3) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent DE-1911-11-16 Otto Albin Budig (3) · Patent US-1908-989022 (3) · Patent FR-1911-446282 (3) · Patent US-1908-935766 (3) · Patent FR-1912-442419 (3) · Patent FR-1909-399456 (3)
Related to aircraft:
Patent agent:
None (263) · Armengaud jeune (27) · None (26) · E. Blétry (14) · Victor J. Evans (13) · J. Bonnet-Thirion (11) · Munn & Co. (11) · Abel & Imray (10) · Marks & Clerk (10) · Schwab (9) · Charles Dony (9) · Lavoix et Mosès (9) · Matray frères et Cie (9) · Brandon frères (8) · Herbert Haddan & Co. (8) · P. Follin (7) · Haseltine, Lake & Co. (7) · J. Germain (7) · Boult, Wade & Tennant (7) · L. Chassevent (7)
National tech categories:
FR 6.4 (330) · None (307) · USPC 244/80 (47) · DE 77h.5 (18) · USPC 244/177 (13) · USPC 244/93 (12) · USPC 416/200R (6) · USPC 244/90R (6) · FR 6.2 (5) · USPC 244/92 (3) · USPC 244/89 (2) · USPC 244/82 (2) · FR 6.3 (2) · USPC 244/139 (2) · USPC 244/91 (2)
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