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Patents > Inventor country: US & Grant date: 1910 - 1919 & Number of figures: 16-17

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airplane (13) · stability (10) · frame (6) · wings (5) · safety (4) · navigation (4) · subsystem (3) · rudder (3) · propeller (3) · parachute (3) · ornithopter (3) · landing (3) · hydroaeroplane (3) · heavier-than-air (3) · None (3) · hybrid (3)
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