Drilldown: Patents

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Patents > Year filed: 1910 - 1919 & Inventor country: DE & Number of figures: 10-40

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airplane (16) · stability (14) · wings (9) · None (7) · control (7) · frame (6) · flapping (6) · propulsion (5) · aerodynamics (5) · sustentation (5) · subsystem (5) · lift (5) · design (5) · Propellers (5) · metal (4) · whole (3) · Airship (3)
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