Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7377724 | Method and device for installing a self-drilling expandable rock bolt and a self-drilling rock bolt | Fredrik Öberg | 2008-05-27 |
| 7320560 | Controlled expansion of rock bolt | Tommy Persson, Fredrik Öberg, Tapio Toivonen, Niclas Örjas, Hans Gustavsson +1 more | 2008-01-22 |
| 7318689 | Method and device for rock bolting | Fredrik Öberg | 2008-01-15 |
| 7270501 | Expandable rock bolt and rock bolting system | Fredrik Öberg | 2007-09-18 |