Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5310164 | Tapping pipe and system for a converter or electric arc furnace | Gunther Haubold, Dieter Bach, Werner Glasmacher, Dieter Stusser | 1994-05-10 |
| 5279993 | Gas injection stone and process of manufacture thereof | Herbert Metzger, Manfred Winkelmann, Jochen Kopia | 1994-01-18 |