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Patents > Inventor country: FR & Filing date: January 1913

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airplane (10) · propellers (9) · design (8) · construction (6) · stability (5) · frame (5) · helicopter (4) · ascension (4) · wings (3) · aerodynamics (3) · propulsion (3) · subsystem (2) · landing (2) · Hydroplane (2) · hybrid (2) · None (2) · automatic stability (2) · sustentation (2)
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