Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33607 | Auto-playing apparatus | Keiji Yuzawa, Naoaki Matsumoto, Naofumi Tateishi, Makoto Fukuda | 1991-06-11 |
| 4646610 | Electronic musical instrument with automatic ending accompaniment function | Keiichi Sakurai | 1987-03-03 |
| 4624171 | Auto-playing apparatus | Keiji Yuzawa, Naoaki Matsumoto, Naofumi Tateishi, Makoto Fukuda | 1986-11-25 |
| 4437378 | Electronic musical instrument | Hideaki Ishida, Tomohisa Ishikawa, Koji Yamana | 1984-03-20 |