Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9797202 | Drill bit for rock drilling tool, and rock drilling tool | John Hammargren | 2017-10-24 |
| 9637982 | Shock wave modification in percussion drilling apparatus and method | Tomas Jansson | 2017-05-02 |