Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822372 | Processing for tanning leather | Karlfried Keller, Hermann Becker, Werner Lotz | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822372 | Processing for tanning leather | Karlfried Keller, Hermann Becker, Werner Lotz | 1989-04-18 |