Drilldown: Patents

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Patents > Publication date: 1909 & Patent agent : C. Blétry or Weismann et Marx

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airplane (12) · design (7) · wings (4) · control (4) · hydrodynamics (3) · submarine (3) · steering (3) · marine (3) · hydroplane (3) · aerodynamics (3) · chassis (3) · construction (3)
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