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Patents > Applicant person : Alfred E. Wunderlich or Joseph Hofmann & Granted: Yes

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propellers (48) · airplane (45) · hybrid (38) · LTA (34) · propulsion (12) · Rarefaction (10) · sustentation (8) · ascension (8) · design (4) · helicopter (4) · None (3) · Gliders (3) · wings (3)
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