Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4505517 | Self-advancing mine roof supports | James Killingworth SEDDON | 1985-03-19 |
| 4281712 | Minimizing clay and shale damage in a log-inject-log procedure | Robert P. Murphy | 1981-08-04 |