Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5096048 | Conveyor | Hans Warnke, Jörg Richter | 1992-03-17 |
| 4844238 | Curve-negotiating endless conveyor system | — | 1989-07-04 |
| 4679856 | Mine self-advancing roof support and method of relocating a mine winning face equipped with self-advancing roof support | Walter Lubojatsky, Gerald Seebacher | 1987-07-14 |
| 4552038 | Remote controlled bolt removing apparatus for bolts securing the head of a reactor pressure vessel | Siegfried Heiermann | 1985-11-12 |
| 4293246 | Mine roof support structure | Werner Boer, Guenter Maschonat, Joerg-Michael Richter, Heinrich Schulte, Hans Warnke | 1981-10-06 |
| 4278005 | Connecting bolt and coupling element | Werner Boer | 1981-07-14 |
| 4224843 | Tensioning device for simultaneously tensioning a plurality of bolts | Siegfried Heiermann, Jörg Richter, Peter Schungel, Kurt Togel, Hans Warnke | 1980-09-30 |