Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816868 | Image forming apparatus | Katsuichi Shimizu, Shunichi Masuda, Masahiro Tomosada, Hisashi Sakamaki | 1989-03-28 |
OS
Osamu Sawamura
Overall (1989): #71,858 of 140,708Top 55%
1
Patents 1989