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Patents > Supplementary to patent : Patent FR-1916-502839 or Patent GB-1909-12556 or Patent GB-1911-29012 or Patent US-1913-04-21 George Raymond Lawrence or None & Assigned to : Établissements de Dion-Bouton or None & IPCs : IPC B64C3/18 or IPC B64C39/00 & CPCs: CPC B64C39/08

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airplane (12) · None (7) · stability (5) · wings (5) · multiplane (3) · control (3) · frame (3) · airfoil (3) · hybrid (2) · propellers (2) · biplane (2) · whole (2) · wheels (2) · construction (2) · design (2) · hydroplane (2) · navigation (2) · safety (2) · aerodynamics (2)
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