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Patents > Year granted: 1911 & Patent agent : E. Blétry or Hippolyte Josse

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airplane (13) · stability (7) · design (7) · construction (6) · propellers (5) · None (4) · wings (4) · wheels (3) · sustentation (3) · propulsion (3) · lift (3) · aerodynamics (3) · chassis (2) · propeller (2) · biplane (2) · navigation (2) · aerial propeller (2) · landing (2) · whole (2) · fuselage (2)
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Showing below up to 31 results in range #1 to #31.

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