Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5894891 | Method and device for extinguishing fires | Reinhard Ries | 1999-04-20 |
| 4550786 | Method of driving steel profiles into a rock substratum | — | 1985-11-05 |
| 4222684 | Method of driving sheet piles into a rock substratum | — | 1980-09-16 |