Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667958 | Routing calls to external networks from a private network | Cao Thanh Phan | 2003-12-23 |
| 6621897 | Multichannel dynamic telephone link and method of operating it | Jacques Litteaut | 2003-09-16 |
| 6600722 | Routing calls in a telecommunications network on the basis of passband | Cao Thanh Phan | 2003-07-29 |