Drilldown: Patents

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Patents > Year granted: 1918 & Family year: 1918 & Number of text pages: 1-2

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Airplane (8) · None (7) · construction (5) · frame (3) · subsystem (3) · LTA (3) · control (3) · hybrid (3) · propellers (2) · helicopter (2) · wings (2) · design (2)
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