Drilldown: Patents

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Patents > Family year: 1800 - 1899 & Citations from after 1930: None & Number of claims: 12-70

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LTA (13) · navigation (11) · propeller (10) · frame (9) · rudder (7) · propulsion (7) · balloon (5) · compartments (4) · flapping (4) · military (3) · ornithopter (3) · cargo (3) · passenger (3) · car (3) · piloting (3)
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