Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7833103 | Method and device for producing a link on a drive-shaft of a motor vehicle | Alfred Rehr, Roland Pfersich, Paul Witte | 2010-11-16 |
| 4679856 | Mine self-advancing roof support and method of relocating a mine winning face equipped with self-advancing roof support | Walter Lubojatsky, Hans Lachner | 1987-07-14 |
| 4332317 | Scraper chain conveyor | Karl Bahre, Werner Boer, Jörg Richter, Hans Warnke | 1982-06-01 |