Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866690 | Vibration imparted focus search devices in an optical type disc playback device | Tatsuo Fushiki | 1989-09-12 |
| 4821124 | Disc case having removable disc and sub-turntable | — | 1989-04-11 |