Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7324007 | Instrumented rock bolt, data logger and user interface system | Jeffrey C. Johnson, Steve P. Signer | 2008-01-29 |
| 6626267 | Apparatus and method for generating power onboard a hoist conveyance | Michael J. Beus, Richard Rains | 2003-09-30 |