Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870443 | Photometric device | Shuichi Kiyohara | 1989-09-26 |
| 4855780 | Photometric device for pseudo format camera | — | 1989-08-08 |
SH
Shingo Hayakawa
Overall (1989): #16,087 of 140,708Top 15%
2
Patents 1989