Drilldown: Patents

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Patents > Grant date: 1920 - 1929 & Assigned to: None & Number of claims: 9-11

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design (7) · propellers (6) · frame (6) · wings (5) · Airplane (4) · biplane (4) · subsystem (3) · propeller (3) · lift (3) · None (3) · chassis (3)
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