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Patents > Grant date: 1911 & Patent agent : Dupont et Elluin or E. Blétry & Citations from after 1930: None

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design (7) · airplane (6) · propellers (5) · propulsion (4) · construction (3) · aerodynamics (3) · sustentation (3) · lift (3) · wings (2) · LTA (2) · dirigibles (2) · parachute (2) · biplane (2) · Stability (2)
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Showing below up to 21 results in range #1 to #21.

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