Drilldown: Patents

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Patents > Publication date: April 1912 & National tech categories: FR 6.4 & Citations from after 1930: None

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airplane (10) · stability (6) · frame (6) · equilibrium (5) · wings (4) · design (4) · chassis (4) · construction (4) · automatic stability (3) · aerodynamics (3) · control (3) · sustentation (3) · propulsion (3) · propellers (3) · piloting (3) · pendulum (3)
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