Drilldown: Patents

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Patents > Year filed: 1890 - 1899 & Office: US & Number of text pages: 2-3 & Number of figures: 5-7

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None (5)
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Tech fields:
LTA (17) · propulsion (13) · frame (10) · navigation (8) · kite (7) · car (6) · propeller (6) · flapping (5) · None (5) · sail (4) · parachute (4) · balloon (4) · marine (3) · projectile (3) · military (3) · rudder (3) · marine propulsion (3) · fabric (3)
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None (14) · USPC 244/153R (4) · USPC 244/30 (3) · USPC 244/28 (3) · USPC 244/3.23 (2) · USPC 244/26 (2) · USPC 416/98 (2) · USPC 24/713.8 (2)
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