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Patents > Year granted: 1911 & Patent agent : Boult, Wade & Tennant or E. Blétry or Hippolyte Josse

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airplane (17) · design (9) · construction (9) · stability (8) · propellers (8) · frame (4) · None (4) · wings (4) · sustentation (3) · Landing (3) · propulsion (3) · wheels (3) · whole (3) · propeller (3) · navigation (3) · aerodynamics (3) · lift (3)
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Showing below up to 41 results in range #1 to #41.

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