Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6445785 | Methods and apparatus for local number portability in telecommunication systems | May Y. Chan, Blayne Maring, David Wang | 2002-09-03 |
| 6338140 | Method and system for validating subscriber identities in a communications network | Leslie Dale Owens, Mark S. Plecity, Alvah B. Davis, David T. Kiswani | 2002-01-08 |