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Patents > Grant date: April 1909 & Number of figures: 7-20

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Airplane (8) · stability (4) · propulsion (4) · Design (4) · hybrid (3) · Construction (3) · navigation (3) · control (3) · propellers (3) · steering (2) · helicopter (2) · Frame (2) · Lift (2) · Airship (2) · LTA (2) · Wings (2) · subsystem (2)
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