Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5327974 | Method and apparatus for removing debris from a wellbore | Joseph F. Donovan | 1994-07-12 |
| 5320176 | Well fluid loss plug assembly and method | Phillip W. Schmuck | 1994-06-14 |