Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4720715 | Optical disc structure having an air sandwich structure | Masahiro Yamada | 1988-01-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4720715 | Optical disc structure having an air sandwich structure | Masahiro Yamada | 1988-01-19 |