Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10822893 | Apparatus and methods for tong operation | Georg Zimbelmann, Bjoern Thiemann | 2020-11-03 |
| 10760359 | Wellbore tong | Martin Helms, Bjoern Thiemann | 2020-09-01 |
| 10472906 | Apparatus and methods for tong operation | Georg Zimbelmann, Bjoern Thiemann | 2019-11-12 |
| 9068406 | Tong positioning arm | Martin Liess, Martin Helms | 2015-06-30 |