Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5327964 | Liner hanger apparatus | John A. O'Donnell | 1994-07-12 |
| 5309621 | Method of manufacturing a wellbore tubular member by shrink fitting telescoping members | John A. O'Donnell | 1994-05-10 |