Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6729406 | Method and apparatus for performing cutting operations in a subterranean well | James M. Barker, David J. Leidel, John A. Regalbuto | 2004-05-04 |
| 4928761 | Two-way plugs for wells | Imre I. Gazda | 1990-05-29 |