Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619187 | Radial piston pump | — | 2003-09-16 |
| 5273378 | Support column | Volker Merz | 1993-12-28 |
| 5088796 | Seam-mining apparatus | — | 1992-02-18 |
| 4883322 | Mining and conveying apparatus | Gunter Blumenthal, Heinz Kunzer | 1989-11-28 |
| 4352602 | Roof support for a mine gallery which extends at a relatively large angle inclined to the horizontal | — | 1982-10-05 |