Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6435288 | Rock drill bit | Kerry C. Willett, Dino L. Ryan | 2002-08-20 |
| 6293359 | Pressure control of a drilling apparatus | Georges J. Desrosiers, James Wilfred McIvor | 2001-09-25 |