Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837482 | Color picture tube having reduced local doming | Osamu Adachi | 1989-06-06 |
| 4831309 | Cathode ray tube apparatus | Shigeya Ashizaki, Hiroshi Suzuki, Masao Natsuhara | 1989-05-16 |