Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4682011 | Furnace for the partial heat treatment of work tools | Gerhard Hoffmann, Rudolf Bauer, Paul Heilmann | 1987-07-21 |
| 4636089 | Process and apparatus for the quenching intensity of liquid quenching batchs | — | 1987-01-13 |