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Patents > Applicant person : Alfred John Macy or Gustav Mees or Henry Félix Villard

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stability (34) · hybrid (15) · airplane (15) · propellers (12) · None (11) · frame (8) · control (8) · propeller (8) · gyroscope (8) · design (7) · propulsion (6) · helicopter (6) · takeoff (5) · construction (5) · landing (5) · wings (4) · automatic stability (4) · lift (4) · hydroplane (4)
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None (21) · 25941D (4) · 1913781506 (2)
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Showing below up to 67 results in range #1 to #67.

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