US PATENT SUBCLASS 381 / 399
.~.~ Conductive diaphragm (e.g., ribbon)

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}
399.~.~ Conductive diaphragm (e.g., ribbon)

DEFINITION

Classification: 381/399

Conductive diaphragm (e.g., ribbon):

(under subclass 396) Subject matter in which at least a portion of a sound radiating membrane itself conducts the information varied electrical signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

176, for a microphone with a conductive diaphragm.

400, for a coil or other conductor path mounted directly on the diaphragm.