Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9458716 | Prop head bearing device for shield supports | Swetlana Horn | 2016-10-04 |
| 5913403 | Drive station for a scraper-chain conveyor usable in an underground mine working | Gerhard Merten | 1999-06-22 |