US PATENT SUBCLASS 379 / 14
.~.~ Of plural exchange network
Current as of:
June, 1999
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379 /
HD
TELEPHONIC COMMUNICATIONS
1
DF
DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT
{12}
9
DF
.~ Of centralized switching system {6}
14
.~.~ Of plural exchange network
DEFINITION
Classification: 379/14
Of plural exchange network:
(under subclass 9) Subject matter wherein a plurality of switching offices facilities are tested.
SEE OR SEARCH THIS CLASS, SUBCLASS:
219+, for a plural exchange telephone network.