Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5400994 | Yieldable roof support system | Khaled Shawwaf, Johann Wlodkowki, Thomas Herbst | 1995-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5400994 | Yieldable roof support system | Khaled Shawwaf, Johann Wlodkowki, Thomas Herbst | 1995-03-28 |