Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4292283 | Method for the recovery of zinc | Horst Weigel | 1981-09-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4292283 | Method for the recovery of zinc | Horst Weigel | 1981-09-29 |