Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10053931 | Drive of an earth drilling device, earth drilling device, and a method for driving an earth drilling device | Sebastian Fischer, Stefan Hermes | 2018-08-21 |
| 9290992 | Plug connection and pipe section for a drill pipe | Sebastian Fischer | 2016-03-22 |
| 8562269 | Drilling apparatus | Stefan Hermes | 2013-10-22 |