Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10788390 | Method for the calibration of a top drive and top drive for a drill string | Philipp Otto | 2020-09-29 |
| 10267358 | Drill drive for a drilling rig | Hans-Philipp Otto | 2019-04-23 |