Issued Patents 2022
Showing 1–2 of 2 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 |