Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5267640 | Transfer station assembly for scraper-chain conveyors | Wilfried Mertens, Bernd Steinkuhl, Bernhard Wleklinski | 1993-12-07 |
| 4512459 | Guide assembly for a curved section of a scraper-chain conveyor | — | 1985-04-23 |
| 4389072 | Longwall mineral mining installation | Horst Linke, Helmut Erwien, Herbert Beyer, Bernhard Wleklinski, Rudolf Mainusch +3 more | 1983-06-21 |
| 4253344 | Sprocket drum assembly | — | 1981-03-03 |
| 4250989 | Curved section and guide assembly | Dieter Grundken | 1981-02-17 |