Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074716 | Tension-activated fluid bypass device and associated method | Johnny N. Champagne, David W. Coleman | 2011-12-13 |
| 7954555 | Full function downhole valve and method of operating the valve | Thomas M. Ashy, Paul L. Connell | 2011-06-07 |