US PATENT SUBCLASS 379 / 129
.~.~.~ Manually set (e.g., key and lock)
Current as of:
June, 1999
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379 /
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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.
