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Patents > Application number: None & Patent agent : Dupont et Elluin or Haseltine, Lake & Co. & Number of figures: 7-60

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stability (6) · propulsion (4) · None (3) · navigation (3) · frame (3) · propeller (3) · marine (2) · hydroplane (2) · hybrid (2) · gyroscope (2) · instrument (2) · airplane (2) · rudder (2)
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