Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6102141 | Rock drill having an internal flushing channel | Håkan Engström, Jan-Gunnar Hedlund | 2000-08-15 |
| 5794728 | Percussion rock drill bit | — | 1998-08-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6102141 | Rock drill having an internal flushing channel | Håkan Engström, Jan-Gunnar Hedlund | 2000-08-15 |
| 5794728 | Percussion rock drill bit | — | 1998-08-18 |