Drilldown: Patents

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Patents > Family year: 1890 - 1899 & Number of text pages: 2-3 & Number of figures: 8-30

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LTA (15) · frame (14) · propulsion (9) · navigation (8) · balloon (7) · None (6) · stability (6) · car (5) · flapping (4) · propeller (4) · kite (4) · human-powered (3) · airship (3)
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