Drilldown: Patents

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Patents > Year granted: 1910 - 1919 & Related to aircraft : 0? or 1911-07-04 or Yes & CPCs: CPC B64C33/00

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flapping (11) · None (10) · frame (8) · airplane (8) · hybrid (5) · design (5) · stability (4) · propulsion (3) · propeller (3) · orthopter (3) · ornithopter (3) · HTA (3) · wings (3) · rudder (2) · control (2) · navigation (2) · takeoff (2) · Airship (2)
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