Drilldown: Patents

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Patents > Grant date: January 1911 & Supplementary to patent: None & Family year: 1909

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frame (9) · airplane (8) · propeller (8) · rudder (7) · propulsion (7) · design (6) · stability (5) · Propellers (5) · None (4) · navigation (4) · LTA (4) · construction (4) · car (3) · parachute (3) · whole (3) · safety (3)
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