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Patents > Inventors : Alfred E. Wunderlich or Édouard-Jean Bigourdan

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propellers (53) · airplane (47) · hybrid (41) · LTA (34) · helicopter (15) · propulsion (10) · ascension (10) · Rarefaction (10) · sustentation (8) · design (6) · heavier-than-air (4) · HTA (3) · descent (3) · None (3)
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Showing below up to 77 results in range #1 to #77.

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