Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356340 | DC Arc furnace having a shielded arc | — | 1982-10-26 |
| 4336411 | Molten metal heating, stirring and casting apparatus | Bertil Hanas | 1982-06-22 |
| 4324943 | DC Arc furnace hearth construction | Bo Rappinger | 1982-04-13 |