Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658968 | Percussive rock drill bit and buttons therefor and method for manufacturing drill bit | Johan Linden | 2003-12-09 |
| 6547891 | Elongated percussive rock drilling element | Johan Linden | 2003-04-15 |
| 6508318 | Percussive rock drill bit and buttons therefor and method for manufacturing drill bit | Johan Linden | 2003-01-21 |
| 6238489 | Methods and apparatus for masking a percussive drill member prior to a surface treatment thereof | — | 2001-05-29 |
| 6220376 | Drill bit and button | — | 2001-04-24 |
| 6095266 | Drill rod and method for its manufacturer | — | 2000-08-01 |
| 5988301 | Drill rod and method for its manufacture | — | 1999-11-23 |
| 5947215 | Diamond enhanced rock drill bit for percussive drilling | — | 1999-09-07 |
| 5919578 | Friction welded product and method for manufacturing thereof | — | 1999-07-06 |
| 5064004 | Drill rod for percussion drilling | — | 1991-11-12 |
| 4951762 | Drill bit with cemented carbide inserts | — | 1990-08-28 |
| 4872515 | Drill rod for percussion drilling | — | 1989-10-10 |