US PATENT SUBCLASS 381 / 397
.~.~ Cooling feature

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}
396  DF  .~ Electromagnetic (e.g., dyynamic) {8}
397.~.~ Cooling feature

DEFINITION

Classification: 381/397

Cooling feature:

(under subclass 396) Subject matter including a feature designed to remove heat from the transducer.

SEE OR SEARCH CLASS

165, Heat Exchange, for heat exchange, generally.

361, Electricity: Electrical Systems and Devices,

688+, for cooling means in electronic systems and devices.