Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580799 | Keyboard comprising a loudspeaker | Martin Colloms | 2003-06-17 |
| 6522760 | Active acoustic devices | Henry Azima, Martin Colloms, Graham Bank, Nicholas Patrick Roland Hill | 2003-02-18 |