US PATENT SUBCLASS 379 / 276
.~.~.~.~.~.~ End-to-end marking (e.g., self-seeking)

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

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
258  DF  .~ Switching controlled in response to called station addressing signal {9}
268  DF  .~.~ Having shared or common switching control {8}
271  DF  .~.~.~ Having multistage switching {2}
272  DF  .~.~.~.~ Path selection or routing {3}
275  DF  .~.~.~.~.~ Including marking circuit {1}
276.~.~.~.~.~.~ End-to-end marking (e.g., self-seeking)

DEFINITION

Classification: 379/276

End-to-end marking (e.g., self-seeking):

(under subclass 275) Subject matter which includes placing a marking potential at both ends of the switching path.