US PATENT SUBCLASS 381 / 394
.~.~ Electrical hardware


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}
386  DF  .~ Mounting or support feature of housed loudspeaker {9}
394.~.~ Electrical hardware


DEFINITION

Classification: 381/394

Electrical hardware:

(under subclass 386) Subject matter including circuit boards, terminals, terminal blocks, signal conductors (i.e., wires, leads, or cords), etc.

(1) Note. Subject matter involving circuitry which filters, amplifies, etc., in combination with a loudspeaker in a housing is classified in this class, subclasses 332+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

332+, for subject matter involving circuitry which filters, amplifies, etc., in combination with loudspeaker in a housing.

384, for a headphone including an electrical hardware feature.