Drilldown: Patents

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Patents > Grant date: 1890 - 1899 & First filing: None & Number of diagram pages: 2-70

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propulsion (15) · navigation (13) · frame (8) · propeller (6) · LTA (6) · balloon (4) · car (3) · marine (3) · flapping (3) · heavier-than-air (2) · takeoff (2) · airfoil (2) · design (2) · sail (2) · jet (2) · wings (2) · glider (2)
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