Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5332199 | Metallurgical vessel | Peter Hoffman | 1994-07-26 |
| 4986847 | Process and apparatus for at least temporarily simultaneously subjecting a molten metal to the action of a gas and fine-grain solid materials | Peter Hoffmann | 1991-01-22 |