Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366049 | Process for recycling of used lubricating oils | Helmut Knorre, Manfred Langer, Willi Fischer | 1982-12-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366049 | Process for recycling of used lubricating oils | Helmut Knorre, Manfred Langer, Willi Fischer | 1982-12-28 |