Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9732577 | Blowout preventer with hinged bonnet | William Rinehart Holland, Jr., Bradford S. Franks | 2017-08-15 |
| D782542 | Hinged bonnet for a blowout preventer | William Rinehart Holland, Jr., Bradford S. Franks | 2017-03-28 |