US PATENT SUBCLASS 257 / 416
.~.~ Acoustic wave

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

414  DF  RESPONSIVE TO NON-ELECTRICAL SIGNAL (E.G., CHEMICAL, STRESS, LIGHT, OR MAGNETIC FIELD SENSORS) {4}
415  DF  .~ Physical deformation {3}
416.~.~ Acoustic wave

DEFINITION

Classification: 257/416

Acoustic wave:

(under subclass 415) Subject matter wherein the physically deforming force is in the form of a traveling vibration made up of sound energy.

SEE OR SEARCH THIS CLASS, SUBCLASS:

254, for field effect acoustic wave responsive devices.