Drilldown: Patents

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Patents > Filing date: 1910 - 1919 & Publication date: 1911 & Number of figures: 12-50000000

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None (14) · airplane (14) · stability (6) · propulsion (6) · propellers (6) · wings (6) · frame (4) · safety (4) · landing (3) · Whole (3) · sustentation (3) · design (3) · propeller (3) · flapping (3) · Aerodynamics (3) · lift (3)
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