Drilldown: Patents

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Patents > Grant date: October 1911 & CPCs : CPC B64C39/08 or None

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subsystem (9) · Airplane (9) · Design (6) · Construction (6) · propellers (4) · frame (3) · Airship (3) · whole (3) · propulsion (3) · propeller (2) · Stability (2) · Wings (2) · control (2) · takeoff (2)
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