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Patents > Grant date: July 1911 & Number of claims: 1-2

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None (3) · Carl Emil Ritter (2) · Franz Adam (2) · Armand-Jean-Auguste Deperdussin (2) · Rudolf Stamkort (2)
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None (7) · Franz Adam (2) · Armand-Jean-Auguste Deperdussin (2) · Rudolf Stamkort (2) · Carl Emil Ritter (2)
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Stability (17) · Airplane (16) · Automatic stability (7) · Design (7) · Wings (7) · aerodynamics (5) · Control (5) · Frame (5) · helicopter (4) · None (4) · texture (3) · sustentation (3) · Subsystem (3) · propulsion (3) · propellers (3) · propeller (3) · Lift (3) · heavier-than-air (3) · hybrid (3) · airfoil (3)
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