Drilldown: Patents

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Patents > Year granted: 1880 - 1889 & Supplementary to patent: None & Number of text pages: 4-50000000

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LTA (17) · navigation (15) · propeller (10) · propulsion (8) · frame (8) · balloon (8) · car (7) · rudder (6) · stability (4) · safety (4) · cargo (4) · compartments (3) · control (3) · marine (3) · passenger (3) · flapping (3)
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