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Patents > Patent agent: Schwab & National tech categories : FR 6.4 or USPC 49/380

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Airplane (19) · stability (14) · Propellers (10) · Propulsion (9) · hybrid (7) · LTA (7) · None (5) · gyroscope (5) · propeller (5) · sustentation (5) · automatic stability (4) · control (4) · Design (4) · flapping (4) · takeoff (4) · HTA (3) · lift (3) · Frame (3) · Airship (3) · Helicopter (3)
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Showing below up to 47 results in range #1 to #47.

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