Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860129 | Signal reproducing device | Nobutoshi Fukuda, Tatsuro Nagao, Naoto Arifuku, Shinichi Yamamisaka, Yoshiki Furuta | 1989-08-22 |
| 4839584 | Signal level display device for recording/reproducing apparatus | Nobutoshi Fukuda, Yoshiki Furuta, Tatsuro Nagao, Naoto Arifuku, Shinichi Yamamisaka | 1989-06-13 |
| 4817075 | Program selection for a digital audio disk | Takashi Kikuchi, Naomi Amemiya, Masami Tsuchida, Shiro Suzuki | 1989-03-28 |