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Patents > Office : BE or CL or FR or LU & Inventors : Alfred E. Wunderlich or Antoine-Padoue Filippi or Edmond de Marçay

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propellers (47) · Airplane (47) · hybrid (38) · LTA (35) · propulsion (13) · sustentation (10) · Rarefaction (9) · Ascension (7) · airfoil (5) · helicopter (4) · navigation (4) · design (4) · subsystem (4) · marine (3) · texture (3)
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