US PATENT SUBCLASS 381 / 375
.~.~.~.~ And microphone

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}
375.~.~.~.~ And microphone

DEFINITION

Classification: 381/375

And microphone:

(under subclass 374) Subject matter in combination with a means for converting sound waves into a varying electrical current or voltage.

(1) Note. A typical example is a microphone supported from the headphone by a boom, often found on telephone operator's headsets.

SEE OR SEARCH THIS CLASS, SUBCLASS:

355, for a housed microphone.

362, for a microphone on a boom.

369, for a microphone capsule.