Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594188 | Keyboard musical instrument having key action mechanisms movable to and from strings | Kiyoshi Kawamura, Masahiro Wada, Nobuo Sugiyama, Shinya Koseki | 1997-01-14 |
| 5591927 | Keyboard musical instrument having key action mechanisms movable to and from strings | Kiyoshi Kawamura, Masahiro Wada, Nobuo Sugiyama, Shinya Koseki | 1997-01-07 |