Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834960 | Process for purifying phosphorous acid | Gunther Schimmel, Bernhard Hofmann | 1989-05-30 |
JG
Jurgen Grosse
Overall (1989): #91,808 of 140,708Top 70%
1
Patents 1989