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Patents > IPCs: IPC B64C3/54 & CPCs: CPC B64C3/54 & First filing: No

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Airplane (19) · Wings (10) · Design (9) · lift (7) · construction (6) · Frame (6) · Aerodynamics (4) · sustentation (4) · Stability (4) · wing warping (3) · steering (3) · Rudder (3) · propulsion (3) · navigation (3) · None (3) · Flapping (3) · Monoplane (3) · Control (3)
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