Drilldown: Patents

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Patents > Year granted: 1912 & Granted: Yes & National tech categories: HU V/h

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airplane (17) · subsystem (14) · design (12) · whole (10) · propellers (9) · construction (9) · frame (5) · Wings (5) · Aerodynamics (4) · automatic stability (4) · stability (4) · monoplane (3) · propulsion (3) · helicopter (3) · Wheels (2) · motors (2) · airship (2) · Chassis (2) · lift (2)
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