Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8795777 | Mine shaft liner plate system and method | Darrell J. Sanders, Mark J. Swarny | 2014-08-05 |
| 7959234 | Rotatable cutting tool with superhard cutting member | Don C. Rowlett, Randall W. Ojanen | 2011-06-14 |