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

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propulsion (12) · design (11) · airplane (9) · Sustentation (6) · ascension (6) · navigation (6) · Wings (5) · Construction (5) · heavier-than-air (5) · Frame (4) · propellers (4) · Whole (3) · safety (3) · parachute (3) · None (3) · flapping (3) · airship (3) · landing (3)
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Showing below up to 34 results in range #1 to #34.

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