Drilldown: Patents

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Patents > Year granted: 1900 - 1909 & National tech categories : DE 77 or USPC 244/30

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LTA (21) · navigation (8) · propulsion (8) · safety (5) · car (5) · frame (4) · parachute (3) · propeller (3) · balloon (3) · compartments (3) · rudder (3) · wheels (2) · marine (2) · kite (2) · stability (2) · dirigible (2) · takeoff (2) · airfoil (2)
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