Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6450273 | Drilling tool including drilling head with multiple cutting members separated drilled material grooves | Hans-Werner Bongers-Ambrosius | 2002-09-17 |
| 6431295 | Rock drill | Hans-Werner Bongers-Ambrosius | 2002-08-13 |
| 6405723 | Suction tool | Hans-Werner Bongers-Ambrosius | 2002-06-18 |
| 6405813 | Rock drill for drilling bores in reinforced concrete | Hans-Werner Bongers-Ambrosius | 2002-06-18 |