Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6929098 | Arrangement for lubricating bearing surfaces of a tool of a hydraulic impact hammer | Jouko Ilmarinen, Ossi Kahra, Mika Oksman | 2005-08-16 |
| 6561285 | Breaking apparatus and tool | Juha Intonen, Ossi Kahra, Jari Korkeila, Ilkka Niemi | 2003-05-13 |
| 6328116 | Arrangement in connection with a hydraulic breaking apparatus | Arvo Hurskainen | 2001-12-11 |
| 5419404 | Hydraulic impact hammer | Ilkka Niemi | 1995-05-30 |