Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9803447 | Asymmetrical button for ram-type blowout preventers | Johnny E. Jurena, David J. McWhorter, Steven F. Shimonek | 2017-10-31 |
| 9759032 | Blowout preventer end connection | Steven F. Shimonek | 2017-09-12 |