Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803731 | Reverbation imparting device | Koji Niimi, Yuji Ikegaya | 1989-02-07 |
YK
Yuji Kakubo
Overall (1989): #39,691 of 140,708Top 30%
1
Patents 1989