US PATENT SUBCLASS 381 / 377
.~.~.~.~ Plural bands

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}
182  DF  .~ Plural or compound reproducers {4}
370  DF  .~.~ Headphone {3}
374  DF  .~.~.~ Particular support structure {9}
377.~.~.~.~ Plural bands

DEFINITION

Classification: 381/377

Plural bands:

(under subclass 374) Subject matter having two or more belts or straps.