Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5601148 | Arrangement for measuring the position of a feed beam in a rock drilling apparatus and/or measuring the position of a rock drill | Pekka Heiskanen, Matti Rissanen | 1997-02-11 |