Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6155605 | Document of value | Andrew Nutton, Malcolm Robert Murray Knight, Duncan Hamilton Reid | 2000-12-05 |
| 5324567 | Ink composition and components thereof | Nicholas Oliver Nugent, Linda Shipman Ellis | 1994-06-28 |
| RE33802 | Numbered documents | Colin J. Whitehead, John Martin Haslop | 1992-01-21 |
| 4645240 | Numbered documents | Colin J. Whitehead, John Martin Haslop | 1987-02-24 |