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Patents > Grant date: 1922 & Related to aircraft : Yes or navigation

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airplane (12) · propellers (10) · design (10) · frame (7) · construction (6) · aerodynamics (5) · biplane (5) · wings (4) · propeller (3) · military (3) · fuselage (3) · propulsion (2) · None (2) · LTA (2) · Airship (2) · aileron (2)
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Showing below up to 34 results in range #1 to #34.

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