Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7073981 | Rock stabilizer | Walter Baillie Wilson, Mark Howell | 2006-07-11 |
| 5658099 | Prop headboard | Brian Peter Lewis, Peter J. Cook | 1997-08-19 |
| 5435670 | Spacer assembly and method | Richard G. King | 1995-07-25 |
| 5427476 | Mine prop headboard | Peter J. Cook | 1995-06-27 |
| 5318387 | Yieldable load support | Graham H. Clarke, Brian Peter Lewis, Mark Howell, Richard G. King, Peter J. Cook | 1994-06-07 |
| 5288178 | Preload headboard for an elongate prop | — | 1994-02-22 |
| 5149228 | Prop preloading apparatus | Brian Peter Lewis, Graham Clark | 1992-09-22 |