Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6131344 | Mixed construction material for slit wall of excavation pit lining | Gunter Schneider | 2000-10-17 |
| 5820303 | Excavation pit lining and method for its production | Gunter Schneider | 1998-10-13 |