Drilldown: Patents

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Patents > Year granted: 1903 & Granted: Yes & Number of claims: 6-30

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propulsion (5) · Propellers (5) · None (4) · frame (4) · LTA (4) · propeller (4) · design (4) · construction (3) · navigation (3) · Aerodynamics (2) · Airship (2) · Helicopter (2) · marine (2) · kite (2)
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