Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816889 | Photoelectric conversion device | — | 1989-03-28 |
| 4814846 | Photoelectric converting device | Shigetoshi Sugawa | 1989-03-21 |
SM
Shigeyuki Matsumoto
Overall (1989): #15,970 of 140,708Top 15%
2
Patents 1989