US PATENT SUBCLASS 340 / 401.1
.~.~ Alternating current

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

Internet Version by PATENTEC © 1999      Terms of Use


340 /   HD   COMMUNICATIONS: ELECTRICAL

384.1  DF  AUDIBLE INDICATION {11}
392.1  DF  .~ Percussion-type sound producer (e.g., signal chimes or bells) {15}
401.1.~.~ Alternating current

DEFINITION

Classification: 340/401.1

Alternating current:

(under subclass 392.1) Subject matter in which striking means is operated by a current that changes polarity with time in such a manner that the current reaches maximum in one direction, decreases to zero, reverses itself, and reaches minimum in the opposite direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

388.2, for alternating current used in diaphragm sound producers.