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Patents > IPCs : IPC B64C3/38 or None & Number of figures: 22-23

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airplane (9) · frame (7) · Design (6) · stability (6) · navigation (6) · Aerodynamics (5) · Flapping (5) · Propulsion (5) · wings (5) · whole (5) · rudder (4) · propellers (4) · propeller (4) · marine (3) · HTA (3) · wheels (3) · takeoff (2) · ornithopter (2) · hybrid (2)
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Showing below up to 21 results in range #1 to #21.

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