Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8733448 | Electrically operated isolation valve | Neal G. Skinner | 2014-05-27 |
| 8689885 | Bi-directional flapper/sealing mechanism and technique | — | 2014-04-08 |
| 6622554 | Open hole formation testing | Kevin R. Manke, Harold W. Nivens, Samuel Bianco, Charles M. MacPhail | 2003-09-23 |