Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5171369 | Device for glow potential processing, in particular ionic carburation | Jan Elwart | 1992-12-15 |
| 4395024 | Apparatus for hardening metallic workpieces including furnace and workpiece transport structure, a part of which can remain in the furnace during furnace operation | Jan Elwart | 1983-07-26 |