Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841267 | Deflection apparatus for cathode ray tube | Isao Yokoyama, Tsutomu Maeda, Koichi Shibuya, Sumio Takahashi | 1989-06-20 |
| 4818618 | Aluminum material coated with fluorine resin | Hiroshi Okazaki, Fumio Matsuyama | 1989-04-04 |