Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868215 | Substituted N-aroyl N'-phenyl urea compounds | Barat Bisabri-Ershadi | 1989-09-19 |
RR
Raymond H. Rigterink
Overall (1989): #67,353 of 140,708Top 50%
1
Patents 1989