US PATENT SUBCLASS 379 / 248
.~.~.~ Using matrix

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

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
245  DF  .~ Identification {1}
246  DF  .~.~ Of line or trunk {3}
248.~.~.~ Using matrix

DEFINITION

Classification: 379/248

Using matrix:

(under subclass 246) Subject matter including an array of elements to determine the line or trunk identity.

SEE OR SEARCH CLASS

340, Communications: Electrical,

825.79+, for a selective matrix.