Drilldown: Patents

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Patents > Year filed: 1911 & Supplementary to patent: None & National tech categories : AT 77d or FR 6.4 or USPC 244/119 & CPCs : CPC B64C13/00 or CPC B64C2700/6218 or CPC B64C35/00

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stability (19) · airplane (13) · automatic stability (9) · wings (5) · design (5) · control (4) · None (3) · landing (2) · equilibrium (2) · whole (2) · subsystem (2) · propellers (2) · Lift (2) · aerodynamics (2) · frame (2) · parachute (2) · chassis (2) · construction (2)
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