US PATENT SUBCLASS 123 / 552
.~.~ Automatic control

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
543  DF  .~ Heating of combustible mixture {13}
552.~.~ Automatic control

DEFINITION

Classification: 123/552

Automatic control:

(under subclass 543) Subject matter in which an engine temperature sensor or other condition-responsive means is provided to control the operation of the heating means.