Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799791 | Illuminance distribution measuring system | Hiroshi Echizen, Akiyoshi Suzuki | 1989-01-24 |
MO
Masakatsu Ota
Overall (1989): #79,409 of 140,708Top 60%
1
Patents 1989