US PATENT SUBCLASS 123 / 438
.~.~ By electrical or electronic control system

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
437  DF  .~ Auxiliary control of carburetor fuel metering {2}
438.~.~ By electrical or electronic control system {1}
439  DF  .~.~.~> Variable venturi carburetor

DEFINITION

Classification: 123/438

By electrical or electronic control system:

(under subclass 437) Subject matter wherein the auxiliary control means utilizes some form of electrical or electronic circuitry in its sensing or controlling action.