(under subclass 403) Subject matter which determines an amount of provided service, such as a time length, number, or frequency of radiotelephone usage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2, for audience survey or program distribution use accounting.
SEE OR SEARCH CLASS
348, Television,
1+, for television use survey and accounting.
379, Telephonic Communications, 111+, for usage measurement in a landline telephone network.