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Patents > Office: HU & Filing date: 1912 & Grant date: 1910 - 1919

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airplane (22) · Construction (13) · design (11) · Propellers (10) · Frame (10) · Airship (7) · Wings (6) · Stability (6) · Aerodynamics (5) · Automatic stability (4) · flapping (4) · chassis (3) · human-powered (3) · Fuselage (3) · Gliders (3) · Parachutes (2) · Biplane (2) · Propulsion (2) · LTA (2) · Equilibrium (2)
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