Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847981 | Method for producing a diaphragm for acoustic appliances | Kunio Suzuki | 1989-07-18 |
TH
Toshiharu Hoshi
Overall (1989): #49,063 of 140,708Top 35%
1
Patents 1989