Drilldown: Patents

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Patents > Year granted: 1800 - 1899 & Number of diagram pages: 3-4 & Number of figures: 5-13

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propulsion (21) · LTA (21) · frame (11) · navigation (10) · balloon (9) · propeller (8) · flapping (8) · car (8) · marine (6) · rudder (5) · sail (4) · stability (3) · electric (3) · wheels (3) · airplane (3) · Windmill (3) · landing (3)
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None (11) · USPC 244/30 (3) · USPC 244/28 (3) · USPC 416/112 (2) · GB 4 motors (2) · USPC 114/21.1 (2) · GB 4 propel & steer (2) · GB 4 without buoyant (2) · USPC 244/64 (2) · DE 77 (2)
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