Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10132126 | Modular top drive | Benson Thomas, Martin Liess, Christian KIESS | 2018-11-20 |
| 10081991 | Modular adapter for tongs | Federico Amezaga, Martin Liess | 2018-09-25 |
| 9957794 | Dart detector for wellbore tubular cementation | Burkhard Zippel, Mark Chandler, Simon J. Harrall | 2018-05-01 |