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Patents > IPCs: IPC B64C11/00 & Number of text pages: 1-2 & Number of figures: 1-2

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propulsion (17) · propellers (17) · Design (10) · airplane (6) · Airship (4) · aerial propeller (4) · LTA (4) · sustentation (4) · Subsystem (3) · marine (3) · lift (3) · aerodynamics (3)
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Showing below up to 38 results in range #1 to #38.

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