Drilldown: Patents

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Patents > Year filed: 1890 - 1899 & Citations from after 1930: None & Number of figures: 11-40

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propulsion (14) · LTA (13) · navigation (13) · frame (11) · balloon (7) · flapping (5) · car (5) · propeller (5) · design (4) · stability (4) · kite (3) · compartments (3) · wheels (3) · piloting (3) · gas (3) · wings (3)
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