Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8739863 | Remote operation of a rotating control device bearing clamp | Leonard C. Linde, Fredrick D. Curtis, Derrick W. Lewis, Joseph Michael Karigan, Mike Harvey +2 more | 2014-06-03 |
| 6725951 | Erosion resistent drilling head assembly | — | 2004-04-27 |