US PATENT SUBCLASS 381 / 344
.~.~.~ Mouthpiece

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

150  DF  ELECTRO-ACOUSTIC AUDIO TRANSDUCER {18}
337  DF  .~ Having acoustic wave modifying structure {5}
339  DF  .~.~ Sound intensifying or spreading element {2}
344.~.~.~ Mouthpiece

DEFINITION

Classification: 381/344

Mouthpiece:

(under subclass 339) Subject matter wherein the modifying element is designed for use close to the mouth of a person speaking into a microphone.