Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7227944 | Echo reduction for a headset or handset | John F. Gerhardt, Robert M. Khamashta, Iain McNeill | 2007-06-05 |
| 7039179 | Echo reduction for a headset or handset | John F. Gerhardt, Robert M. Khamashta, Iain McNeill | 2006-05-02 |