Drilldown: Patents

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Patents > Family year: 1900 - 1909 & Citations from after 1930: 1-2 & Number of figures: 8-14

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propulsion (10) · propeller (7) · stability (6) · airplane (5) · None (5) · marine (4) · rudder (4) · LTA (4) · flapping (4) · frame (4) · helicopter (4) · parachute (3)
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