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Patents > CPCs : CPC B64C17/00 or CPC B64C2700/6295 or CPC F02C5/00

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Tech fields:
None (640) · stability (502) · airplane (479) · automatic stability (210) · design (173) · frame (149) · control (109) · Aerodynamics (107) · wings (92) · construction (82) · equilibrium (69) · Rudder (68) · Subsystem (58) · Lift (55) · navigation (49) · whole (43) · Propellers (41) · pendulum (40) · wheels (40) · Propulsion (34)
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None (1477) · (1/4) (2) · Sperry Gyroscope Company (2)
National tech categories:
None (642) · FR 6.4 (531) · USPC 244/80 (61) · USPC 244/45R (48) · USPC 244/13 (32) · DE 77h.5 (23) · USPC 244/93 (22) · USPC 244/90R (14) · USPC 244/177 (13) · USPC 244/87 (10) · USPC 244/91 (9) · USPC 244/92 (8) · USPC 244/233 (6) · USPC 244/113 (6) · USPC 244/139 (6) · USPC 244/100R (6) · FR 6.3 (6) · USPC 244/48 (5)
IPCs:
None (664) · IPC B64C17/00 (526) · IPC B64C1/00 (279) · IPC B64C39/00 (265) · CPC B64C17/00 (9) · IPC B64C2700/6295 (7) · IPC B64C39/08 (5) · IPC B64C17/04 (4) · IPC B64C3/48 (3) · IPC B64C3/38 (3) · IPC B64C9/00 (2) · IPC B64C39/06 (2) · IPC B64C3/54 (2) · IPC B64C19/00 (2) · IPC H03B7/10 (2) · IPC B64C39/00 (2) · IPC B64C1/00 (2)
CPCs: (Click arrow to add another value)
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Citations from after 1930:

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