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Patents > Inventors : Alfred E. Wunderlich or Otto Lilienthal & Granted: Yes

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propellers (45) · airplane (42) · hybrid (36) · LTA (32) · None (14) · rarefaction (10) · propulsion (9) · sustentation (8) · ascension (7) · design (4) · helicopter (4)
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Showing below up to 81 results in range #1 to #81.

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