Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6438225 | Method and system for detecting and controlling severe echo | — | 2002-08-20 |
| 6351531 | Method and system for controlling echo cancellation using zero echo path, ringing, and off-hook detection | Michael J. Kirk | 2002-02-26 |
| 6347140 | Echo canceling method and apparatus | Michael J. Kirk | 2002-02-12 |