Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800112 | Optical recording medium | Akira Aoyama, Shinobu Kunida | 1989-01-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800112 | Optical recording medium | Akira Aoyama, Shinobu Kunida | 1989-01-24 |