Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4669709 | Device for the injection of gases into molten metals and minerals | Nils Pettersen | 1987-06-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4669709 | Device for the injection of gases into molten metals and minerals | Nils Pettersen | 1987-06-02 |