Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5844981 | Method and system of improved routing to WATS | Donald S. Pitchford | 1998-12-01 |
| 5838769 | Method of reducing risk that calls are blocked by egress switch or trunk failures | Donald S. Pitchford, Iyad Tarazi | 1998-11-17 |