Drilldown: Patents

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Patents > Grant date: July 1909 & Number of diagram pages: 1-2

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None (3) · Todd Churchill Woodworth (2) · Emanuel Spreekmeester (2)
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None (4) · Emanuel Spreekmeester (2)
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Propulsion (12) · Airplane (11) · LTA (10) · navigation (10) · Design (9) · Hybrid (7) · stability (6) · Control (6) · Airship (4) · Propellers (4) · Aerodynamics (4) · frame (4) · Subsystem (3) · flapping (3) · Sustentation (3) · Helicopter (3) · None (3) · Wings (3) · Ascension (3)
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