Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869837 | Preparation of a basic salt | Henricus M. J. Brons | 1989-09-26 |
GW
Gerhard d. van Wijngaarden
Overall (1989): #111,038 of 140,708Top 80%
1
Patents 1989