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Patents > Applicant person : Alfred E. Wunderlich or Alfred John Macy or Charles Pregaldino

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airplane (47) · propellers (46) · hybrid (36) · LTA (32) · stability (24) · rarefaction (10) · propulsion (9) · sustentation (8) · ascension (7) · design (6) · control (4) · helicopter (4) · None (3) · aerodynamics (3) · parachutes (3) · automatic stability (3)
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