Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4945533 | Method and apparatus for transmitting data | Francis O. Couch, Chamna Saenguraiporn | 1990-07-31 |
| 4881221 | Method and apparatus for disabling an echo canceller on a digital telecommunications network | Francis O. Couch, Chamna Saenguraiporn | 1989-11-14 |