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Patents > Office: FR & Publication date: 1911 & Number of text pages: 6-50

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None (11) · Airplane (6) · Stability (4) · frame (3) · propulsion (3) · wings (3) · sustentation (2) · construction (2) · design (2) · equilibrium (2) · flapping (2) · Propellers (2) · gyroscope (2)
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