Drilldown: Patents

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Patents > Grant date: 1800 - 1899 & Number of claims: 4 & Number of diagram pages: 2-70

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propulsion (9) · LTA (9) · frame (7) · navigation (4) · human-powered (4) · balloon (4) · flapping (3) · propeller (3) · None (3) · car (3) · cargo (3) · safety (2) · whole (2) · stability (2) · landing (2) · rigid (2)
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