Drilldown: Patents

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Patents > Publication date: 1912 & IPCs : IPC B64C11/00 or IPC B64C23/00 or IPC B64C35/00 & First filing: No

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propulsion (8) · helicopter (6) · propellers (5) · airplane (5) · None (4) · design (4) · hybrid (4) · aerodynamics (4) · rudder (3) · frame (3) · hydroplane (3) · control (2) · seaplane (2)
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Showing below up to 22 results in range #1 to #22.

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