Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5725599 | Process for mineral tanning, re-tanning or leather after-treatment | Bernard Danner, Eckardt Hauser, Jurg Heller, Andre Vallotton | 1998-03-10 |
| 5355842 | Gas hot water heater | Dietmar Debus | 1994-10-18 |