US PATENT SUBCLASS 381 / 164
.~ Thermal response to, or generation of, sound vibration

Current as of: June, 1999
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381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

150  DF  ELECTRO-ACOUSTIC AUDIO TRANSDUCER {18}
164.~ Thermal response to, or generation of, sound vibration

DEFINITION

Classification: 381/164

Thermal response to, or generation of, sound vibration:

(under subclass 150) Subject matter where sound waves either modify or are emitted by a temperature effect on an element material, or area of the device.