Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083010 | Drilling device for drilling and reaming of a hole | Teijo Hulkkonen | 2011-12-27 |
| 7614464 | Rock drill machine | — | 2009-11-10 |
| 7124843 | Bit assembly for a hammering drill | Teijo Hulkkonen | 2006-10-24 |
| 6029753 | Increased efficiency percussion piston and method for operating same | Jaakko Kuusento | 2000-02-29 |
| 5406658 | Lifting and transfer system for a patient | Kari Olkkonen, Kalle Valimaa | 1995-04-18 |
| 4736806 | Continuously revolving percussion drilling machine | Pekka Salmi | 1988-04-12 |
| 4711090 | Method of and device for adjusting the feed movement of a drill rod for drilling a rock | Eero Hartiala, Jaakko Kuusento | 1987-12-08 |
| D282666 | Shank adaptor for a rock drill | Pekka Salmi | 1986-02-18 |
| 4402557 | Drill steel centralizer | Pekka Salmi, Jarmo Heinonen | 1983-09-06 |
| 4355691 | Hydraulic drilling apparatus | Esa Karru, Pekka Salmi, Aimo Helin | 1982-10-26 |
| 4343227 | Hydraulic percussion apparatus | Esa Karru, Pekka Salmi | 1982-08-10 |