US PATENT SUBCLASS 379 / 141
.~.~.~ Mechanical register

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

111  DF  WITH USAGE MEASUREMENT (E.G., CALL OR TRAFFIC REGISTER) {3}
133  DF  .~ Call traffic recording or monitoring {2}
140  DF  .~.~ At subscriber {1}
141.~.~.~ Mechanical register

DEFINITION

Classification: 379/141

Mechanical register:

(under subclass 140) Subject matter wherein the traffic information is sorted in a mechanical register.