Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7900712 | Hydraulic system for mining equipment and method of adjusting power of rock drill machine | Jouko Muona, Jaakko Niemi, Jukka Osara, Tapani Pöysti | 2011-03-08 |
| 7895900 | Measuring device, rock breaking device and method of measuring stress wave | Markku Keskiniva, Heimo Ihalainen, Jukka Lekkala | 2011-03-01 |