US PATENT SUBCLASS 374 / 162
.~.~.~ Color

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

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
159  DF  .~ Nonelectrical, nonmagnetic, or nonmechanical temperature responsive property {2}
161  DF  .~.~ Change of optical property {1}
162.~.~.~ Color

DEFINITION

Classification: 374/162

Color:

(under subclass 161) Subject matter wherein the sensor changes color.