Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5857167 | Combined speech coder and echo canceler | Charles W. K. Gritton | 1999-01-05 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5857167 | Combined speech coder and echo canceler | Charles W. K. Gritton | 1999-01-05 |