Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6105692 | Swivel chamber for water actuated wireline drills | David Sean Parent, Robert Thom | 2000-08-22 |
| 4846320 | Cable hanger for electrically powered mine vehicles | — | 1989-07-11 |