Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885644 | Spindle servo device for data recording disk reproducing apparatus | Hidehiro Ishii, Osamu Watanabe, Takeshi Izumo, Noriyoshi Takeya, Kazuhiko Katakami +2 more | 1989-12-05 |
| 4872068 | Disk playing method resulting in reduced start-up time | Hidehiro Ishii, Osamu Watanabe, Takeshi Izumo, Noriyoshi Takeya, Kazuhiko Katakami +2 more | 1989-10-03 |
| 4870512 | Data recording and reproducing device | — | 1989-09-26 |