Drilldown: Patents

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Patents > Year granted: 1910 - 1919 & Office : BE or NL or NZ or Other & Related to aircraft : Yes or None & IPCs: IPC B64C23/00

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airplane (22) · hybrid (11) · design (10) · propellers (9) · wings (7) · Propulsion (6) · helicopter (6) · None (6) · ascension (5) · Sustentation (5) · construction (5) · control (5) · stability (5) · frame (5) · lift (5) · navigation (4) · aerodynamics (3) · descent (3) · propeller (3) · parachutes (3)
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Showing below up to 39 results in range #1 to #39.

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