Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875079 | Toner density control for multicolor electrophotographic copier | Takashi Bisaiji, Noboru Sawayama | 1989-10-17 |
HY
Hideo Yoo
Overall (1989): #103,574 of 140,708Top 75%
1
Patents 1989