Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4518284 | Mine roof supports | Kunibert Becker, Rudiger Kirchbrucher | 1985-05-21 |
| 4390308 | Advance mechanism for a mine roof support assembly | Kunibert Becker, Rudiger Kirchbrucher, Gunter Lagodka | 1983-06-28 |