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

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airplane (12) · construction (7) · propellers (6) · frame (4) · Wings (3) · Design (3) · propulsion (3) · control (3) · subsystem (3) · landing (2) · hydroaeroplane (2) · fuselage (2) · stability (2) · LTA (2) · automatic stability (2) · biplane (2)
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