Drilldown: Patents

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Patents > Year filed: 1893 & Year granted: 1890 - 1899 & Family year: 1893

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LTA (18) · propulsion (10) · propeller (8) · car (7) · frame (7) · navigation (5) · None (4) · balloons (3) · airship (3) · control (3) · design (3) · airfoil (3)
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