Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9528341 | Continuous expandable backup ring for a seal with retraction capability | — | 2016-12-27 |
| 9284814 | Downhole tool with remotely actuated drag blocks and methods | Douglas J. Lehr | 2016-03-15 |