Drilldown: Patents

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Patents > Year granted: 1890 - 1899 & Number of text pages: 3 & Number of figures: 4-6

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LTA (9) · propulsion (6) · car (6) · design (4) · navigation (4) · None (3) · balloon (3) · stability (3) · dirigible (2) · takeoff (2) · fan (2) · frame (2)
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