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Patents > Filing date: October 1911 & Number of text pages: 3-20

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control (16) · airplane (16) · subsystem (14) · stability (11) · frame (11) · pendulum (9) · None (8) · aerodynamics (7) · wings (7) · automatic stability (7) · piloting (6) · equilibrium (6) · navigation (5) · design (4) · flapping (4) · gyroscope (3) · steering (3) · construction (3)
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None (8) · CPC B64C17/00 (5) · CPC B64C33/02 (5) · CPC B64C2700/6214 (4) · CPC B64C17/06 (3) · CPC B64C2700/6216 (3) · CPC B64F2700/6296 (2) · CPC B64C13/00 (2) · CPC B64C35/00 (2) · CPC B64C2700/6295 (2) · CPC B64C39/00 (2) · CPC B64C23/005 (2) · CPC B64B1/58 (2)
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