Drilldown: Patents

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Patents > Publication date: 1919 & Number of figures: 4

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airplane (13) · Construction (7) · Propellers (6) · frame (6) · subsystem (5) · wings (4) · Biplane (4) · Design (3) · LTA (3) · landing (2) · fuselage (2) · propulsion (2) · safety (2) · hydroaeroplane (2) · stability (2) · Control (2) · automatic stability (2)
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