US PATENT SUBCLASS 340 / 398.2
.~.~.~ With electromagnetic control

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

384.1  DF  AUDIBLE INDICATION {11}
392.1  DF  .~ Percussion-type sound producer (e.g., signal chimes or bells) {15}
398.1  DF  .~.~ Nonelectrical driving means (e.g., spring or weight) {1}
398.2.~.~.~ With electromagnetic control {1}
398.3  DF  .~.~.~.~> Including circuit breaker

DEFINITION

Classification: 340/398.2

With electromagnetic control:

(under subclass 398.1) Subject matter having an armature operated by an electromagnet to restrict or release the striking means.