Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868878 | Sound field correction system | Yoshiro Kunugi, Toshikazu Yoshimi, Yoshio Sasaki, Shinjiro Kato, Shuuichi Mori +2 more | 1989-09-19 |
AT
Akio Tokumo
Overall (1989): #134,311 of 140,708Top 100%
1
Patents 1989