Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6775376 | Proxy database for element management system of telephone switching network | Phil A. Marzullo, Liwei Ren | 2004-08-10 |
| 6512824 | Proxy database for element management system of telephone switching network | Phil A. Marzullo, Liwei Ren | 2003-01-28 |