Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6788783 | Digital loop carrier system with enhanced call handling and method | — | 2004-09-07 |
| 6724780 | Voice frequency data enhancement method | Arupjyoti Bhuyan, Gerald R. Boyer, Ronald R. Brown, Jeffrey Louis Duffany, Phillip C. Goelz +7 more | 2004-04-20 |