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Patents > Filing date: May 1912 & Family year: 1911 & First filing: No

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airplane (11) · Stability (9) · design (5) · aerodynamics (3) · helicopter (3) · frame (3) · wings (2) · heavier-than-air (2) · gas (2) · Fuselage (2) · fuel (2) · rudder (2) · flying machine (2) · equilibrium (2) · automatic stability (2) · control (2) · valve (2) · LTA (2)
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