Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6378630 | Locking swivel device | Robert Roszak | 2002-04-30 |
| 6302198 | One trip milling system | Dave L. Heinley | 2001-10-16 |
| 5971078 | Method and apparatus for retrieving downhole tools | Dave L. Heinley | 1999-10-26 |