Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5000271 | Feeding device for a rock drilling machine | Vesa Uitto, Ossi Tienari | 1991-03-19 |
| 4979575 | Method of drilling a hole-in a rock | Rolf Strom, Risto Wisakanto | 1990-12-25 |