Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D447713 | Spectrophotometer | Anthony Stevenson, Mark Cresswell, John L. Curtis, David Alan Percival, David Andrewes +3 more | 2001-09-11 |
| D443539 | Sample holder for spectrophotometer | Anthony Stevenson, Mark Cresswell, John L. Curtis, David Alan Percival, David Andrewes +3 more | 2001-06-12 |