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Patents > Grant date: January 1911 & Family year: 1909

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airplane (13) · Frame (9) · propeller (9) · Propulsion (8) · Design (8) · Propellers (7) · rudder (6) · stability (6) · Construction (5) · LTA (5) · safety (4) · navigation (4) · None (4) · car (3) · whole (3) · parachute (3) · Wings (3) · Marine (3)
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