Drilldown: Patents

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Patents > Filing date: 1910 - 1919 & Grant date: 1920 & Number of claims: 3

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airplane (13) · design (6) · wings (6) · None (4) · propellers (4) · propulsion (4) · lift (3) · fuselage (3) · frame (3) · stability (3) · motors (3) · control (3) · airfoil (3)
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