Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10167688 | Method of disconnecting a drill string at a drill rig | Johan Jelgert, Lars E. Larsson, Per Vilen | 2019-01-01 |
| 9745805 | Method of interconnecting a drill rod with a drill string by means of a threaded connection, rod handling system and drill rig | Peter Rosmark, Per Vilen | 2017-08-29 |
| 9650849 | Drilling rig rod handling apparatus | Johan Jelgert, Lars E. Larsson, Per Vilen | 2017-05-16 |