Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4332317 | Scraper chain conveyor | Karl Bahre, Jörg Richter, Gerald Seebacher, Hans Warnke | 1982-06-01 |
| 4293246 | Mine roof support structure | Hans Lachner, Guenter Maschonat, Joerg-Michael Richter, Heinrich Schulte, Hans Warnke | 1981-10-06 |
| 4278005 | Connecting bolt and coupling element | Hans Lachner | 1981-07-14 |