Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888760 | Optical head apparatus | Shinsuke Shikama, Eiichi Toide, Kazuo Iwata | 1989-12-19 |
| 4859033 | Method of producing optical head assembly | Keizo Kono, Natsuro Tsubouchi, Shiro Hine, Hiroshi Nishihara, Toshiaki Suhara | 1989-08-22 |