US PATENT SUBCLASS 379 / 238
.~.~.~.~ Having signalling repeater

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

219  DF  PLURAL EXCHANGE NETWORK OR INTERCONNECTION {6}
229  DF  .~ Interexchange signalling {6}
236  DF  .~.~ D.C. signalling over trunk {1}
237  DF  .~.~.~ Pulse or digital signalling {2}
238.~.~.~.~ Having signalling repeater

DEFINITION

Classification: 379/238

Having signalling repeater:

(under subclass 237) Subject matter including amplification of interexchange pulse or digital signals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

341+, for a telephone pulse signalling repeaters, per se.