Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883123 | Above packer perforate, test and sample tool and method of use | Gary D. Zunkel, H. Kent Beck | 1989-11-28 |
| 4878538 | Perforate, test and sample tool and method of use | — | 1989-11-07 |