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Patents > Filing date: 1911 & Related to aircraft : No or Other & IPCs : IPC B64C11/00 or IPC B64C35/00

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propulsion (14) · propellers (12) · design (8) · wings (4) · airplane (4) · helicopter (3) · aerodynamics (3) · marine (3)
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Showing below up to 32 results in range #1 to #32.

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