Drilldown: Patents

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Patents > Year filed: 1870 - 1879 & Related to aircraft : .5 or 1 & Number of text pages: 1-2

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LTA (11) · propulsion (9) · human-powered (5) · car (5) · marine (4) · balloon (3) · navigation (3) · airplane (3) · flapping (3) · kite (3)
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None (8) · USPC 244/153R (2) · USPC 244/94 (2) · USPC 244/97 (2) · USPC 244/22 (2) · USPC 416/194 (2)
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