US PATENT SUBCLASS 374 / 173
.~.~.~ By feedback in amplifier circuit or with constant current source in circuit

Current as of: June, 1999
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374 /   HD   THERMAL MEASURING AND TESTING

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
163  DF  .~ By electrical or magnetic heat sensor {13}
172  DF  .~.~ With compensation for sensor nonlinearity or lead impedance {1}
173.~.~.~ By feedback in amplifier circuit or with constant current source in circuit

DEFINITION

Classification: 374/173

By feedback in amplifier circuit or with constant current source in circuit:

(under subclass 172) Subject matter wherein the signal modification is performed by either feedback circuitry of an amplifier, or circuitry of an amplifier, or circuitry including a constant current source.