Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4542794 | Method and a means for aligning a rock drill | — | 1985-09-24 |
| 4537263 | Method and means for adjusting the feed support of a rock drilling unit into a given distance from the drilling location | — | 1985-08-27 |
| 4506745 | Method and means for drilling in rocks | — | 1985-03-26 |
| 4237463 | Directional coupler | Bjorn Raad | 1980-12-02 |