Drilldown: Patents

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Patents > Year granted: 1840 - 1849 & Inventor location: None & Filing date: 1800 - 1899

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navigation (15) · LTA (13) · marine (10) · propellers (8) · submarine (7) · propulsion (5) · balloon (3) · landing (2) · None (2) · propeller (2) · frame (2) · aerostat (2) · wheels (2) · whole (2) · rudder (2)
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