Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835220 | Transparent, impact-resistant styrene block polymers and their preparation | Klaus Bronstert, Karl Gerberding | 1989-05-30 |
HJ
Helmut Jenne
Overall (1989): #106,769 of 140,708Top 80%
1
Patents 1989