Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835780 | Semiconductor laser output control circuit | Yoshinobu Takeyama, Kazuyuki Shimada | 1989-05-30 |
KS
Keiichi Sugimura
Overall (1989): #87,689 of 140,708Top 65%
1
Patents 1989