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Patents > Filing date: June 1912 & Family year: 1912 & Number of claims: 2-5

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airplane (13) · propulsion (5) · design (5) · propellers (4) · wings (3) · frame (3) · stability (3) · rudder (3) · propeller (3) · construction (3) · control (3) · Navigation (3) · fuselage (3) · steering (2) · parachute (2) · aerial propeller (2) · None (2)
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