Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832159 | Elevator control apparatus | Shigemi Iwata | 1989-05-23 |
SI
Satomi Ikejima
Overall (1989): #59,405 of 140,708Top 45%
1
Patents 1989