Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11156054 | Annular blowout preventer | John L. Alsup, Bolie C. Williams, III, J. GILBERT NANCE, THOR ARNE HAVERSTAD | 2021-10-26 |
| 11118419 | Wellbore control device | — | 2021-09-14 |
| 10711555 | Wellbore control device | — | 2020-07-14 |
| 10519739 | Ram for a blowout preventer and a blowout preventer provided with rams | THOR ARNE HAVERSTAD, J. GILBERT NANCE, John L. Alsup, Bolie C. Williams, III | 2019-12-31 |
| 4906136 | Method for connecting a conduit to a subsea structure, and a device for use in connecting a conduit end to a subsea structure | Rune Sletten | 1990-03-06 |