Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10344896 | Vertical ratcheting anti-rotation device | Scott P. Ellisor, Christopher C. Mayer, John E. Nelson | 2019-07-09 |
| 10190379 | Inner drilling riser tie-back connector seal | — | 2019-01-29 |