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Patents > Office: FR & IPCs: IPC B64C39/00 & CPCs : CPC B64C2700/6256 or CPC B64C39/003 or CPC B64C39/005

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propulsion (12) · design (12) · airplane (9) · sustentation (6) · Ascension (6) · navigation (6) · wings (5) · propellers (5) · construction (5) · heavier-than-air (5) · flapping (4) · Frame (4) · Whole (3) · safety (3) · rudder (3) · parachute (3) · None (3) · landing (3) · airship (3)
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Showing below up to 37 results in range #1 to #37.

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