Patent 06131032 - Method and apparatus for monitoring users of a communications system > Summary

US Patent

Patent Application No. US 06131032

Published on Oct 10, 2000

Application No. 8/980562

Field on Dec 1, 1997

Classification

International:

National:

455/445

379/33;

455/26.1;

Field of Search

379/33

379/59;

379/35;

379/7;

379/34;

455/422;

455/423;

455/424;

455/450;

455/455;

455/515;

455/517;

455/521;

455/26..1;