Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11299987 | Heading machine with cusp cutter | Ralf Grief, Stefan Hasler, Karl Irregger, Stefan Steiner | 2022-04-12 |
| 11274551 | Material handling apparatus for a mining machine | Helga Schicho, Karl Irregger | 2022-03-15 |
| 7011167 | Device for sealing a drill hole and for discharging drillings or stripped extraction material | Bernhard Ebner, Bruno Reumuller, Barry Schmitke | 2006-03-14 |