Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10294722 | Device for producing a bore in the ground, rotary drive device and rotary seal arrangement | Frank Foerster | 2019-05-21 |
| 10221626 | Top drive for a drill string | Albrecht Heinrichs, Achim Feldermann, Sebastian Leier | 2019-03-05 |