Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932795 | Lateral seal for blowout preventer shear blocks | William Rinehart Holland, Jr., Jess W. Shows | 2018-04-03 |
| 9732577 | Blowout preventer with hinged bonnet | William Rinehart Holland, Jr., Jess W. Shows | 2017-08-15 |
| D782542 | Hinged bonnet for a blowout preventer | William Rinehart Holland, Jr., Jess W. Shows | 2017-03-28 |
| 8978751 | Method and apparatus for sealing a wellbore | Sascha A. Castriotta | 2015-03-17 |