Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5362133 | Method of mining coal seams at a defined preset depth of cutting during ploughing with a cutter | — | 1994-11-08 |
| 5275469 | Method of working coal seams to a defined preset depth of cutting during ploughing with a cutter | Werner Reinelt | 1994-01-04 |
| 5181451 | Control system for longwall face support frames | Werner Reinelt | 1993-01-26 |
| 5050060 | Intrinsically safe power supply unit | — | 1991-09-17 |
| 5011433 | Multipole connector for control devices in underground working | Otmar Pfeiffer, Josef Welzel | 1991-04-30 |
| 4780638 | Method and system for the production of electrical energy by means of a pressure medium | Werner Reinelt, Karl Krieger, by Hildegard Krieger, legal representative | 1988-10-25 |
| 4398851 | Arrangement for controlling advancing timbering in underground mining | Georg Rotzer | 1983-08-16 |