Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9970258 | Remotely operated stage cementing methods for liner drilling installations | Douglas Brian Farley, Egor Dudochkin, Steven Michael Rosenberg, Bjørn Erling Hagen, Richard Dalzell | 2018-05-15 |
| 9915105 | Swivel and method of use | Douglas Brian Farley, Egor Dudochkin, Steven Michael Rosenberg | 2018-03-13 |