Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8770313 | Impulse generator, hydraulic impulse tool and method for producing impulses | Kenneth Weddfelt, Göran Tuomas | 2014-07-08 |
| 5823274 | Drill rod | Harri Sjoholm | 1998-10-20 |
| 5524717 | Method of using a pressurized medium in drilling | Harri Sjoholm | 1996-06-11 |
| 4979575 | Method of drilling a hole-in a rock | Rolf Strom, Veijo Nurmi | 1990-12-25 |
| 4702621 | Bearing arrangement for a feeding device for a drilling machine | Jarmo Heinonen, Rolf Strom | 1987-10-27 |