US PATENT SUBCLASS 374 / 176
.~.~ Including sensor having hysteresis or cryogenic property (e.g., ferromagnetism, superconductivity)

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}
176.~.~ Including sensor having hysteresis or cryogenic property (e.g., ferromagnetism, superconductivity) {1}
177  DF  .~.~.~> Ferroelectric

DEFINITION

Classification: 374/176

Including sensor having hysteresis or cryogenic property (e.g., ferromagnetism, superconductivity):

(under subclass 163) Subject matter wherein the sensor has either a residual electric or magnetic field absent an external field applied thereto, or a property peculiar to temperatures near absolute zero.

(1) Note. Included herein are magnetized elements.

(2) Note. Included herein are superconductivity and certain paramagnetic-ferromagnetic transitions.