Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815715 | Gas purging assembly for supplying gas to molten metal in a metallurgical vessel | Dietmar Ganson, Mel Zetz | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815715 | Gas purging assembly for supplying gas to molten metal in a metallurgical vessel | Dietmar Ganson, Mel Zetz | 1989-03-28 |