Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9212552 | Device and method for driving tunnels, galleries or the like | Sverker Hartwig, Jerk Back | 2015-12-15 |
| 9004609 | Method and device for working rock | Sverker Hartwig, Gunnar Nord, Federico Scolari, Jan F. Wallenius, Morgan Norling | 2015-04-14 |
| 8950823 | Method and device for working rock | Mats Kristerson, Carl-Gustav Martinsson, Sverker Hartwig, Morgan Norling, Gunnar Nord | 2015-02-10 |
| 5046783 | Tunnel boring machine | Carl S. M. Hartwig | 1991-09-10 |
| 4289461 | Liquid injected compressor with temperature control of liquid | Gosewinus F. van Oorschot | 1981-09-15 |