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Patents > National tech categories : USPC 244/153R or USPC 244/30 or USPC 244/80 & First filing: Yes & Number of claims: 11-50

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stability (11) · LTA (9) · navigation (7) · airplane (7) · frame (7) · propulsion (4) · takeoff (4) · car (4) · propeller (4) · pendulum (3) · landing (3) · rudder (3) · control (3) · automatic stability (3)
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