Drilldown: Patents

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Patents > Granted: Yes & IPCs: IPC B64C23/00 & Number of text pages: 4-20000000

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airplane (14) · Propulsion (8) · design (6) · stability (6) · propellers (6) · Ascension (6) · navigation (6) · whole (5) · hybrid (5) · frame (5) · lift (4) · None (3) · LTA (3) · motors (3) · control (3) · construction (3) · propeller (3) · Sustentation (3) · heavier-than-air (3)
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