Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832159 | Elevator control apparatus | Satomi Ikejima | 1989-05-23 |
| 4817761 | Control apparatus for elevator | Hiroyuki Ikejima | 1989-04-04 |
SI
Shigemi Iwata
Overall (1989): #16,049 of 140,708Top 15%
2
Patents 1989