Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877830 | Metal chelate resins | Heinz Dobeli | 1989-10-31 |
FH
Frich Hochuli
Overall (1989): #114,745 of 140,708Top 85%
1
Patents 1989