Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805705 | Drill bit | Sven P. Liljebrand | 1989-02-21 |
| 4760887 | Drill element for percussion drilling | Kjell Jansson, Lars E. Liljeblad | 1988-08-02 |
| 4598779 | Rock drill bit | Bo Carl G. Nordmark, Tommy Tukala | 1986-07-08 |
| 4441565 | Guiding device for percussion drills | — | 1984-04-10 |
| 4399879 | Boring head | Anders Persson | 1983-08-23 |
| 4274496 | Method and device in earth cutting | Anders Persson | 1981-06-23 |
| 4228863 | Reamer bit for raise boring | Anders Persson | 1980-10-21 |