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Patents > Applicant person : Albert Sugden or Alfred John Macy or Gustav Mees

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stability (32) · airplane (13) · hybrid (12) · None (10) · propellers (9) · gyroscope (8) · control (7) · propeller (6) · helicopter (6) · design (6) · frame (5) · takeoff (5) · automatic stability (4) · landing (4) · hydroplane (4) · ascension (3)
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Showing below up to 58 results in range #1 to #58.

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