US PATENT SUBCLASS 379 / 129
.~.~.~ Manually set (e.g., key and lock)


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}
114  DF  .~ Call charge metering or monitoring {5}
121  DF  .~.~ At central office {4}
129.~.~.~ Manually set (e.g., key and lock)


DEFINITION

Classification: 379/129

Manually set (e.g., key and lock):

(under subclass 121) Subject matter having a hand operated call charge metering device.