Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797700 | Diaphragm device | Sadahiko Tsuji | 1989-01-10 |
HI
Hiroyoshi Inaba
Overall (1989): #105,384 of 140,708Top 75%
1
Patents 1989