Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521291 | Coal extraction | Geoffrey M. Kimber, Terry D. Rantell, Colin Snape | 1985-06-04 |
| 4487682 | Coal extraction | Geoffrey M. Kimber, Terry D. Rantell | 1984-12-11 |
| 4301015 | Filtration | Derek Parsons | 1981-11-17 |