US PATENT SUBCLASS 123 / 336
.~ Having plural throttle valve structure

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

319  DF  ENGINE SPEED REGULATOR {16}
336.~ Having plural throttle valve structure

DEFINITION

Classification: 123/336

Having plural throttle valve structure:

(under subclass 319) Subject matter having more than one butterfly valve in the engine intake (e.g., carburetor).