US PATENT SUBCLASS 379 / 33
.~.~ Alarm or emergency (e.g., cut line)

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

1  DF  DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT {12}
32  DF  .~ Indication of nonstandard condition of telephone equipment {1}
33.~.~ Alarm or emergency (e.g., cut line)

DEFINITION

Classification: 379/33

Alarm or emergency (e.g., cut line):

(under subclass 32) Subject matter where the indicated condition is of damage, or imminent hazard to, telephone equipment.