Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877853 | Polymethyl methacrylate molding compounds | Werner Siol, Franz Wenzel, Peter J. Arndt, Ulrich Terbrack | 1989-10-31 |
EH
Ernst Heil
Overall (1989): #116,593 of 140,708Top 85%
1
Patents 1989