Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9803447 | Asymmetrical button for ram-type blowout preventers | David J. McWhorter, Charles E. Gibbs, Steven F. Shimonek | 2017-10-31 |
| 9644444 | Load-sharing ram packer for ram type blowout preventers | — | 2017-05-09 |