Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7047985 | Removal of blockages from pipework using carbamate and nitric acid treatment steps | Iain Stewart Dennis | 2006-05-23 |
| 5762150 | Drill rod changer assembly | Eugene Cheng, Stuart A. Connell, Danny S. Bailey | 1998-06-09 |
| 4962787 | Fluid flow reversing and regulating ring | — | 1990-10-16 |