Drilldown: Patents

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Patents > Grant date: 1890 - 1899 & First filing: None & Number of claims: 4-9

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LTA (9) · propulsion (8) · navigation (7) · frame (6) · balloon (5) · flapping (3) · design (3) · heavier-than-air (3) · human-powered (2) · electricity (2) · rigid (2) · Dirigibles (2) · compartments (2) · car (2) · subsystem (2)
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