Drilldown: Patents

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Patents > Year filed: 1890 - 1899 & CPCs: None & Number of figures: 8-50000000

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navigation (23) · propulsion (21) · LTA (20) · frame (18) · balloon (12) · propeller (11) · car (8) · rudder (7) · design (7) · wheels (5) · flapping (5) · stability (5) · takeoff (4) · gas (3) · parachute (3) · passenger (3) · compartments (3) · cargo (3) · rigid (3) · airfoil (3)
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