US PATENT SUBCLASS 367 / 150
.~.~ With modifying lens

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

140  DF  SIGNAL TRANSDUCERS {4}
141  DF  .~ Underwater type {15}
150.~.~ With modifying lens

DEFINITION

Classification: 367/150

With modifying lens:

(under subclass 141) Subject matter combined with an acoustically transparent means which changes the direction of a ray of acoustic wave energy.

SEE OR SEARCH CLASS

310, Electrical Generator or Motor Structure,

335, for piezoelectric-type acoustic wave transducers having modifying lens.