Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8740174 | Dual-direction ram-type blowout preventer seal | John David Juda | 2014-06-03 |
| 7975761 | Method and device with biasing force for sealing a well | Michael Wayne Berckenhoff, Dustin Dean Gass | 2011-07-12 |