Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830465 | Irreversible optical recording media and fabrication thereof | Arend Werner, Helmut Barzynski | 1989-05-16 |
HH
Hartmut Hibst
Overall (1989): #108,562 of 140,708Top 80%
1
Patents 1989