Drilldown: Patents

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Patents > Full specification filed date: 1909 & National tech categories: None & Number of figures: 8-30

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airplane (10) · design (6) · stability (5) · propellers (5) · automatic stability (4) · frame (4) · lift (3) · hybrid (3) · Propulsion (3) · Aerodynamics (2) · None (2) · sustentation (2) · Subsystem (2) · ascension (2) · construction (2)
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Showing below up to 22 results in range #1 to #22.

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