US PATENT SUBCLASS 379 / 4
.~ Of repeater

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

1  DF  DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT {12}
4.~ Of repeater

DEFINITION

Classification: 379/4

Of repeater:

(under subclass 1) Subject matter which tests a device which amplifies or transfers a signal between two telephone circuits, or circuit sections.

SEE OR SEARCH THIS CLASS, SUBCLASS:

338+, for a telephone repeater.

SEE OR SEARCH CLASS

370, Multiplex Communications,

243, for fault detection of a multiplex repeater, and subclasses 246+ for testing of a standard operation of a multiplex repeater.

375, Pulse or Digital Communications,

213, for testing of a pulse or digital repeater.