Drilldown: Patents

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Patents > Filing date: December 1909 & CPCs : CPC B64C2700/6281 or None

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Airplane (17) · frame (11) · design (8) · wings (7) · construction (7) · propellers (6) · propulsion (6) · stability (6) · wheels (6) · takeoff (5) · whole (5) · navigation (5) · human-powered (5) · propeller (4) · control (3) · lift (3)
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Showing below up to 35 results in range #1 to #35.

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