Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6628763 | Call waiting service in multimedia-capable network | — | 2003-09-30 |
| 6519331 | Telecommunications system, service control point and method for pre-screening telephone calls to help prevent telephone toll fraud | Gilman R. Stevens | 2003-02-11 |