Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771641 | DTMF digit collection and transportation for a packet network | Tahsin Choudhuri, Christopher Haun, Scott L. Orton, Stephen R. Whynot | 2004-08-03 |
| 6757732 | Text-based communications over a data network | Christopher Haun | 2004-06-29 |