Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054564 | Well perforating apparatus | Michael L. Oestreich | 1991-10-08 |
| 4773299 | Well perforating apparatus and method | Michael L. Oestreich | 1988-09-27 |
| 4726431 | Well perforating apparatus and method | Michael L. Oestreich | 1988-02-23 |