Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543100 | Method for making artificial rocks, in particular large-scale rock imitations | Sven Precht | 1996-08-06 |
| 5443774 | Method for making artificial rocks, in particular large-scale rock imitations | Sven Precht | 1995-08-22 |