Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691971 | Multiple recording layer focusing of a light spot with an addition of zoom lens | — | 1997-11-25 |
JK
Jong-ryull Kim
Overall (1997): #128,250 of 185,788Top 70%
1
Patents 1997