Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6055443 | Transparent call progress | James Walter Exner, Edward Leung Chui Jung, Craig Matthews | 2000-04-25 |
| 5787364 | Transparent call progress | James Walter Exner, Edward Leung Chui Jung, Craig Matthews | 1998-07-28 |