Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9476302 | Discharging of material excavated in underground workings | Hubert Rieger | 2016-10-25 |
| 5392869 | Anchor bolt drilling and setting device | Hermann Froschl, Alfred Zitz | 1995-02-28 |