Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297642 | Apparatus for storing drill rods | Jouko Kaakkurivaara, Leo Hakkinen, Pekka Koskelo, Markku Launiemi | 1994-03-29 |
| 5121802 | Method and arrangement for controlling a rock drilling apparatus | Rauno Rajala | 1992-06-16 |
| 4972911 | Travelling centralizer arrangement in a rock drill | — | 1990-11-27 |
| 4676322 | Supporting arrangement for a feed device for a rock drilling machine | — | 1987-06-30 |
| 4586571 | Method of and arrangement for positioning of a drilling apparatus | Pentti Hyvonen | 1986-05-06 |