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Patents > Applicant person : Alfred E. Wunderlich or Arthur Crane or Gustav Mees

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propellers (55) · airplane (51) · hybrid (47) · LTA (32) · propulsion (11) · helicopter (11) · rarefaction (10) · ascension (10) · design (9) · stability (9) · None (8) · sustentation (8) · gyroscope (8) · propeller (6) · frame (6) · takeoff (5) · control (5) · hydroplane (4)
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