Drilldown: Patents

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Patents > Grant date: 1911 & National tech categories : HU V/h or USPC 244/15

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Airplane (19) · subsystem (17) · Design (17) · Propellers (16) · whole (14) · propulsion (10) · Frame (7) · Construction (7) · Stability (6) · wings (5) · Helicopter (4) · Airship (4) · Ascension (4) · lift (4) · Takeoff (3) · sustentation (3) · aerodynamics (3) · automatic stability (3)
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Showing below up to 41 results in range #1 to #41.

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