Drilldown: Patents

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Patents > Grant date: 1919 & Publication date: 1919 & IPCs: None

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Airplane (27) · Design (12) · propellers (12) · frame (11) · construction (10) · airship (9) · wings (7) · stability (7) · subsystem (5) · military (5) · fuselage (4) · safety (4) · propulsion (4) · Aerodynamics (4) · control (4)
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