Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6315365 | Mining machine with core breakers | Eduard Krivec, Kurt-Michael Schaffer | 2001-11-13 |
| 5498069 | Bit holder with a detachably fixed bit bushing | Gottfried Siebenhofer, Alfred Zitz | 1996-03-12 |