Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8721227 | Yielding bolt and assembly | John G. Oldsen, Marc W. Lamothe | 2014-05-13 |
| 7632045 | Detachable anchor bolt mixing head for use in mine roof support systems and method of using same | Denis Champaigne | 2009-12-15 |