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Patents > IPCs: IPC B64C23/00 & Number of text pages: 4-20000000

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Airplane (15) · Propulsion (8) · stability (7) · design (6) · whole (6) · hybrid (6) · frame (6) · propellers (6) · ascension (6) · Navigation (6) · propeller (4) · Lift (4) · None (3) · LTA (3) · motors (3) · control (3) · construction (3) · sustentation (3) · takeoff (3) · heavier-than-air (3)
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Showing below up to 37 results in range #1 to #37.

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