Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6751299 | Voice messaging system | Mark Klein, Edgar Allan Tu | 2004-06-15 |
| 6690785 | System and method for providing called party information for centralized telephone service | Ronald D. Stelter | 2004-02-10 |