Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4449860 | Mine roof supports | Kunibert Becker, Rudiger Kirchbrucher | 1984-05-22 |
| 4448263 | Drilling apparatus | Kunibert Becker, Rudiger Kirchbrucher | 1984-05-15 |
| 4401399 | Two part mine roof support unit | Kunibert Becker, Gerd Dunkel | 1983-08-30 |