Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828353 | Submersible optical wet connector | Masayoshi Yamaguchi | 1989-05-09 |
TH
Toshio Hagihara
Japan National Oil: 1 patents #1 of 2Top 50%
Overall (1989): #49,177 of 140,708Top 35%
1
Patents 1989