Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7972085 | Method and device for shoring trenches | — | 2011-07-05 |
| 5931607 | Lining device | — | 1999-08-03 |
| 5503504 | Sheeting device | Josef Kuppers | 1996-04-02 |
| 5310289 | Apparatus for sheeting deep trenches | — | 1994-05-10 |
| 4692540 | Process for the preparation of cyclic phosphites | Hugo Illy, Bjorn Schliebs | 1987-09-08 |