Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6196320 | Method of cleaning a well bore prior to installing a water based fluid system | Warren J. Ray | 2001-03-06 |
| 5904208 | Method of cleaning a well bore prior to cementing | Warren J. Ray | 1999-05-18 |