Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Patent agent: None & Number of claims: 7-15

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airplane (11) · design (10) · propellers (9) · frame (7) · construction (6) · wings (5) · None (4) · metal (3) · fuselage (3) · motors (3) · biplane (3) · stability (3) · propeller (3)
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