Drilldown: Patents

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Patents > Grant date: 1920 - 1929 & National tech categories: FR 6.4 & Number of text pages: 3

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Airplane (17) · Design (11) · construction (7) · Propellers (7) · Wings (6) · frame (5) · control (5) · lift (4) · subsystem (4) · sustentation (3) · aerodynamics (3) · Stability (3)
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Showing below up to 32 results in range #1 to #32.

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