Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D395656 | Speaker | Peter Harries, Roger F. Cox | 1998-06-30 |
| D395432 | Sound system comprising speakers and mixer-amplifier | Peter Harries, Roger F. Cox | 1998-06-23 |
| D389824 | Mixer-amplifier tower for incorporation in a sound system | Peter Harries, Roger F. Cox | 1998-01-27 |