Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9181777 | Annular pressure release sub | John E. Hebert, Brandon Bourg, Joshua T. Smith | 2015-11-10 |
| 4674569 | Stage cementing tool | Ernest A. Revils, Brent J. Lirette | 1987-06-23 |