Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5724149 | Optical communication link fault signalling | Andrew David Ellis, Robert M. Percival | 1998-03-03 |
| 5004314 | Optical signal modulation device | Richard Booth, Alan R. Beaumont, Barbara E. Daymond-John, David G. Cunningham | 1991-04-02 |
| 4995100 | Amplication of optical signals | Andrew David Ellis, Derek Malyon | 1991-02-19 |