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Patents > Patent agent : Haseltine, Lake & Co. or Victor J. Evans & Number of figures: 12-18

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Stability (6) · helicopter (3) · gyroscope (3) · frame (3) · propeller (3) · hybrid (3) · airplane (3) · hydroaeroplane (2) · marine (2) · automatic stability (2) · propulsion (2) · navigation (2)
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Showing below up to 13 results in range #1 to #13.

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