Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7644782 | Method for correcting positioning errors in rock drilling, and rock drilling equipment | John J. Coogan, Jussi Heikkola | 2010-01-12 |
| 6293355 | Method of controlling rock drilling | Pertti Koivunen, Erkki Eilo | 2001-09-25 |