Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819766 | Group supervising system for outdoor observatory elevator | — | 1989-04-11 |
TS
Takaharu Saito
Overall (1989): #52,502 of 140,708Top 40%
1
Patents 1989