Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7633963 | Accessory interface bus for telephone headset adapter | Arthur Anderson, Keith Derrick | 2009-12-15 |
| 7627289 | Wireless stereo headset | — | 2009-12-01 |
| 7211986 | Inductive charging system | Peter M. Flowerdew | 2007-05-01 |
| 6134420 | Vector measuring aerial arrays for magnetic induction communication systems | Peter M. Flowerdew | 2000-10-17 |
| 5729603 | Self-configuring telephone interface unit | Robert M. Khamashta | 1998-03-17 |
| 5557704 | Heating vessel with chromium-enriched stainless steel substrate promoting adherence of thin film heater thereon | Michael Dennis | 1996-09-17 |
| 4454558 | Solenoid drive circuit | — | 1984-06-12 |