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Patents > Year granted: 1920 - 1929 & IPCs : IPC B64C1/00 or IPC B64C25/00

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Tech fields:
stability (9) · airplane (9) · chassis (7) · frame (7) · None (6) · fuselage (6) · landing gear (5) · landing (5) · wheels (3) · automatic stability (3) · undercarriage (3) · construction (3) · design (3) · marine (2) · shock-absorbers (2) · aerodynamics (2) · flying machines (2) · metal (2) · gyroscope (2)
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CPCs:
CPC B64C17/00 (9) · CPC B64F2700/6226 (9) · CPC B64C25/06 (7) · CPC B64C2700/6218 (7) · CPC B64C1/00 (5) · CPC B64C2001/0063 (4) · CPC B64C25/62 (4) · CPC B64C25/64 (3) · CPC B64C17/06 (3) · CPC B64C25/00 (2) · CPC B64C2001/0081 (2) · CPC B64C2700/6216 (2) · CPC B64C13/02 (2) · CPC B64C1/12 (2) · CPC B64C1/26 (2)
First filing:
Cites these patents:
Citations from after 1930:
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Showing below up to 37 results in range #1 to #37.

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