Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876159 | Magnetrooptical recording media and method of preparing them | — | 1989-10-24 |
SS
Sung Chul Shin
Overall (1989): #54,194 of 140,708Top 40%
1
Patents 1989