Drilldown: Patents

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Patents > Filing date: 1910 - 1919 & Grant date: 1914 & Number of diagram pages: 4-11

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None (3) · Adolf Sprater (2) · Lewis Ginter Young (2) · Alfred John Macy (2)
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None (11) · airplane (11) · stability (9) · frame (5) · propellers (4) · control (3) · wheels (3) · flapping (3) · wings (3) · navigation (2) · whole (2) · lift (2) · airship (2) · propulsion (2) · helicopter (2) · ornithopter (2)
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