Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840894 | Drill head and device with a sliding contact electrical connection for drilling a bore in the ground | Alexander Stauffer | 2017-12-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840894 | Drill head and device with a sliding contact electrical connection for drilling a bore in the ground | Alexander Stauffer | 2017-12-12 |