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Patents > Applicant person : Alfred John Macy or Gustav Mees or Harry N. Atwood

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stability (34) · None (15) · airplane (11) · hybrid (11) · propellers (9) · gyroscope (8) · control (7) · propeller (6) · design (6) · helicopter (6) · takeoff (5) · frame (5) · landing (4) · hydroplane (4) · automatic stability (4) · ascension (3) · propulsion (3)
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None (16) · 25941D (4) · 1913781506 (2)
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Showing below up to 64 results in range #1 to #64.

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