Drilldown: Patents

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Patents > Year filed: 1890 - 1899 & Office : SE or US & Number of text pages: 3-2000

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LTA (15) · propulsion (12) · navigation (11) · frame (10) · balloon (6) · marine (6) · flapping (5) · car (5) · parachute (5) · rudder (4) · military (4) · stability (3) · propeller (3) · None (3)
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None (15) · USPC 244/25 (3) · USPC 244/28 (2) · USPC 244/3.14 (2) · USPC 114/21.1 (2)
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