Drilldown: Patents

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Patents > Year filed: 1900 - 1909 & Assigned to: None & Number of figures: 12

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propeller (6) · propulsion (6) · LTA (6) · airplane (5) · frame (5) · Helicopter (5) · wings (4) · Control (3) · Subsystem (3) · None (2) · propellers (2) · equilibrium (2) · Stability (2) · Design (2) · steering (2) · balloon (2) · kite (2) · parachute (2)
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