Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668325 | Method and apparatus for determining compressive stress in pillars | Jinsheng CHEN, Syd S. Peng | 1997-09-16 |
| 5567018 | Continuous mining linear advance system | — | 1996-10-22 |