Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860272 | Erroneous track jump restoration apparatus for optical record disc player | Meisei Nishikawa, Jun Inagawa, Takeshi Inagaki, Toshihiko Kaneshige, Yasuhiro Hayashi | 1989-08-22 |
| 4830475 | Focusing means for a zoom lens group | Shozo Ishiyama, Makoto Banno | 1989-05-16 |