Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696748 | Hologram optical system for optical pickup for optical disk drive | — | 1997-12-09 |
HY
Hiroyasu Yoshikawa
Overall (1997): #139,894 of 185,788Top 80%
1
Patents 1997