US PATENT SUBCLASS 367 / 180
.~.~ Piezoelectric


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

140  DF  SIGNAL TRANSDUCERS {4}
178  DF  .~ Receivers {6}
180.~.~ Piezoelectric


DEFINITION

Classification: 367/180

Piezoelectric:

(under subclass 178) Subject matter wherein acoustic wave energy is converted into electrical energy by a material which exhibits an electrostatic polarization when subjected to mechanical stress.