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Patents > Grant date: 1914 & Patent agent : Armengaud jeune or Weismann et Marx

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Airplane (9) · frame (8) · LTA (6) · Design (5) · stability (5) · automatic stability (4) · propellers (4) · Dirigibles (4) · construction (4) · aerodynamics (3) · subsystem (3) · rigid (3) · motors (3)
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