US PATENT SUBCLASS 73 / 727
.~.~.~.~.~ Piezoresistive

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

700  DF  FLUID PRESSURE GAUGE {20}
715  DF  .~ Diaphragm {6}
723  DF  .~.~ With electrical readout {3}
725  DF  .~.~.~ Resistive {1}
726  DF  .~.~.~.~ Strain gauge {1}
727.~.~.~.~.~ Piezoresistive

DEFINITION

Classification: 73/727

Piezoresistive:

(under subclass 726) Subject matter wherein the element is made of a semiconductor material whose resistance to the flow of electrical current is varied by the application of pressure thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

754, for electrical pressure gauges involving semiconductor devices.

SEE OR SEARCH CLASS

338, Electrical Resistors,

4, for strain gauge type fluid or gas pressure actuated.