Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867033 | Idiophone having a resonant chamber | Shigemitsu Fujioka | 1989-09-19 |
| 4858510 | Resonant musical instruments | Mitsugu Yaguchi, Junji Fujii | 1989-08-22 |
| 4843944 | Idiophone | — | 1989-07-04 |