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Patents > Filing date: 1909 & Patent agent : Charles Dony or Weismann et Marx

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airplane (13) · frame (6) · subsystem (5) · design (4) · wings (4) · propulsion (4) · aerodynamics (3) · airfoil (3) · Stability (3) · chassis (3) · construction (3) · control (3) · propeller (2) · industry (2) · incidence (2) · lift (2) · ornithopter (2)
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