Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690854 | Regulation and closure apparatus for a metallurgical vessel | Rick Ardell, Bernhard Schiefer | 1997-11-25 |
| 5686008 | Closure and regulation apparatus for a metallurgical vessel | Jose Gimpera, Steve Lee | 1997-11-11 |