US PATENT SUBCLASS 374 / 112
.~.~.~ Difference or gradient

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

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
101  DF  .~ Composite temperature-related paramenter {3}
110  DF  .~.~ Plural spaced temperature function {4}
112.~.~.~ Difference or gradient {2}
113  DF  .~.~.~.~> By thermoelements connected in series opposition
114  DF  .~.~.~.~> By current modifying elements in circuit (e.g., bridge)

DEFINITION

Classification: 374/112

Difference or gradient:

(under subclass 110) Subject matter wherein the resultant measurement is the difference between the temperatures at two of the spaced-apart points or the ratio of such a difference to the distance between the two points.