Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863830 | Process for hard tone development of silver halide photographic light-sensitive material | Eiichi Okutsu | 1989-09-05 |
KW
Kazumi Watase
Overall (1989): #89,426 of 140,708Top 65%
1
Patents 1989