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Patents > CPCs : CPC B64C17/00 or CPC B64C39/00 & Family year: 1900 - 1999

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None (558) · stability (456) · Airplane (418) · automatic stability (193) · design (188) · frame (128) · Control (110) · aerodynamics (105) · wings (94) · construction (87) · equilibrium (67) · Lift (62) · subsystem (61) · propellers (58) · rudder (46) · propulsion (45) · aeroplane (43) · pendulum (37) · whole (37) · fuselage (36)
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None (619) · Armengaud jeune (46) · None (45) · E. Bletry (22) · Marks & Clerk (21) · J. Bonnet-Thirion (17) · Charles Dony (16) · J. Germain (13) · L. Chassevent (13) · Lavoix et Mosès (12) · Matray frères et Cie (12) · Weismann et Marx (12) · Haseltine, Lake & Co. (11) · Victor J. Evans (11) · Abel & Imray (11) · Herbert Haddan & Co. (10) · Brandon frères (10) · Boramé et Julien (10)
National tech categories:
None (628) · FR 6.4 (562) · USPC 244/80 (60) · USPC 244/93 (19) · USPC 244/177 (13) · DE 77h.5 (12) · FR 6.3 (8) · USPC 244/92 (8) · USPC 244/90R (7) · USPC 244/91 (4) · USPC 244/139 (3) · USPC 244/13 (3) · USPC 244/113 (3) · USPC 244/233 (3) · USPC 244/89 (3)
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