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Patents > CPCs: CPC B64C39/00 & Family year: 1908 & Number of claims: 2-20

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Airplane (13) · propellers (6) · None (5) · stability (5) · propulsion (5) · Design (4) · sustentation (4) · lift (4) · Automatic stability (4) · Frame (3) · Wings (3) · aerodynamics (2)
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