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Patents > CPCs : CPC B64C11/343 or CPC B64C17/00 & Citations from after 1930: None

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Tech fields:
stability (338) · airplane (301) · None (267) · automatic stability (164) · Design (91) · control (81) · aerodynamics (70) · equilibrium (60) · frame (56) · wings (50) · subsystem (49) · construction (36) · pendulum (31) · rudder (31) · lift (28) · propellers (23) · navigation (20) · fuselage (16) · steering (16) · aileron (16)
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None (529) · Patent GB-1909-8531 (4) · Patent FR-1908-396249 (4) · Patent US-1908-1077750 (3) · Patent FR-1912-442419 (3) · Patent FR-1911-446282 (3) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent DE-1911-11-16 Otto Albin Budig (3) · Patent NO-1915-12-15 Carl Alfred Johansson (3) · Patent FR-1909-399456 (3)
Related to aircraft:
Patent agent:
None (374) · Armengaud jeune (28) · None (19) · Marks & Clerk (12) · E. Blétry (10) · Charles Dony (9) · Abel & Imray (8) · P. Follin (7) · Haseltine, Lake & Co. (7) · J. Bonnet-Thirion (7) · Matray freres et Cie (6) · Brandon frères (6) · Paul Coulomb (6) · Schwab (6)
National tech categories:
None (325) · FR 6.4 (292) · USPC 244/80 (35) · DE 77h.5 (20) · USPC 244/93 (15) · USPC 244/92 (7) · USPC 244/90R (4) · USPC 416/135 (3) · FR 6.3 (3) · USPC 244/177 (3) · USPC 416/136 (2) · USPC 244/79 (2) · USPC 244/89 (2) · USPC 244/91 (2) · USPC 244/233 (2) · USPC 416/131 (2) · USPC 244/87 (2)
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