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Patents > CPCs : CPC B64C17/00 or CPC B64C33/02 or CPC B64D27/00

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Tech fields:
None (560) · stability (333) · airplane (246) · automatic stability (106) · frame (101) · flapping (98) · propulsion (70) · control (69) · wings (64) · Design (59) · ornithopter (59) · subsystem (48) · equilibrium (48) · navigation (47) · Rudder (43) · aerodynamics (39) · propeller (37) · LTA (30) · construction (30) · Propellers (27)
Full specification filed date:
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National tech categories:
FR 6.4 (484) · None (410) · USPC 244/22 (71) · USPC 244/80 (60) · DE 77h.10 (22) · DE 77h.5 (21) · USPC 244/72 (20) · USPC 244/93 (20) · DE 77 (15) · USPC 244/177 (13) · FR 6.3 (12) · USPC 244/92 (8) · USPC 244/90R (7) · DE 77h (5) · USPC 244/64 (3) · USPC 244/87 (3) · USPC 244/233 (3) · FR 6.2 (3) · USPC 244/60 (3) · USPC 244/139 (3)
IPCs:
IPC B64C17/00 (547) · None (437) · IPC B64C1/00 (295) · IPC B64C33/02 (164) · IPC B64D27/00 (33) · IPC B64C33/00 (14) · CPC B64C17/00 (9) · IPC B64C17/04 (4) · IPC B64C9/00 (3) · IPC B64C3/48 (3) · IPC B64C3/38 (3) · IPC B64C23/00 (2) · IPC B64C19/00 (2) · IPC H03B7/10 (2) · IPC B64C1/00 (2)
CPCs: (Click arrow to add another value)
First filing:
Citations from after 1930:
Number of diagram pages:

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