Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881029 | Semiconductor integrated circuit devices and methods for testing same | — | 1989-11-14 |
| 4841499 | Multi-disc player | Akira Takahashi, Testuro Kamimura, Kiyoshi Morikawa, Sei Onishi | 1989-06-20 |