Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4997548 | Coal extraction | Geoffrey M. Kimber, Gordon Dennison | 1991-03-05 |
| 4521291 | Coal extraction | James W. Clarke, Geoffrey M. Kimber, Colin Snape | 1985-06-04 |
| 4487682 | Coal extraction | James W. Clarke, Geoffrey M. Kimber | 1984-12-11 |