Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460630 | Method and rock drilling apparatus for controlling rock drilling | Arne Lislerud | 2002-10-08 |
| 4648467 | Pressure fluid operated percussion drilling machine provided with a rotation mechanism | Jaakko Kuusento | 1987-03-10 |