Drilldown: Patents

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Patents > Inventor country: US & Family year: 1910 - 1919 & Number of figures: 17-19

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stability (12) · Airplane (12) · None (10) · wings (5) · HTA (4) · construction (4) · gyroscope (4) · navigation (3) · flying boat (3) · propellers (3) · hydroaeroplane (3) · helicopter (3) · frame (3)
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