Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847196 | Stabilized composition of tetrazolium salts | Edda Geisler, Hans Lange | 1989-07-11 |
| 4613569 | Stabilized composition of tetrazolium salts | Edda Geisler, Hans Lange | 1986-09-23 |