Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803731 | Reverbation imparting device | Koji Niimi, Yuji Kakubo | 1989-02-07 |
YI
Yuji Ikegaya
Overall (1989): #39,757 of 140,708Top 30%
1
Patents 1989