Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6597780 | Method and system for providing a continuous tone source using a service node | Stephen R. LaPierre, Zeeman Zhang | 2003-07-22 |
| 6505163 | Network and method for providing an automatic recall telecommunications service with automatic speech recognition capability | Zeeman Zhang | 2003-01-07 |