Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9447654 | Downhole circulating valve having a seal plug and method for operating same | James Dan Vick, Jr., Jimmie R. Williamson, Jr., Robert L. Thurman | 2016-09-20 |
| 9388663 | Downhole circulating valve having a metal-to-metal seal and method for operating same | Jimmie R. Williamson, Jr., Leo G. Collins, David L. Reesing | 2016-07-12 |