Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4612044 | Method of vacuum treating metal melts, and vessel for use in the method | Gernot Zahs | 1986-09-16 |
| 4199350 | Method for the production of quality steels | Gernot Zahs | 1980-04-22 |