Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5134277 | Remote data transfer system with ambient light insensitive circuitry | Michael J. Yerbury, Graeme Bullock, Peter L. Jones | 1992-07-28 |
| 5134720 | Signal locating apparatus | Alan Hector Fergus Nickols | 1992-07-28 |
| 4945225 | Signal discriminator | Peter Leigh-Jones, Charles Jungo | 1990-07-31 |