US PATENT SUBCLASS 123 / 697
.~.~.~ Heater for sensor or sensor environment

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

434  DF  CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29}
672  DF  .~ Including exhaust gas condition responsive means {11}
693  DF  .~.~ With compensator for sensor output (e.g., current or voltage) {2}
697.~.~.~ Heater for sensor or sensor environment

DEFINITION

Classification: 123/697

Heater for sensor or sensor environment:

(under subclass 693) Subject matter wherein separate means is provided for raising the temperature of the products of combustion in the region of the transducer or of the transducer itself.