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Patents > Office : BE or FR & Applicant person : Alfred E. Wunderlich or Émile Letord

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propellers (41) · airplane (41) · hybrid (38) · LTA (34) · rarefaction (9) · sustentation (8) · ascension (7) · construction (4) · helicopter (4) · propulsion (3) · control (3) · design (3) · ball bearings (2) · motors (2) · Buoyancy (2) · instrument (2) · ribs (2) · gliders (2)
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Showing below up to 62 results in range #1 to #62.

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