Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4677577 | Apparatus for statistically processing elevator traffic information | Kenichi Uetani | 1987-06-30 |
| 4567558 | Elevator traffic demand analyzing system | Yasukazu Umeda | 1986-01-28 |
| 4503941 | Supervisory apparatus for elevators | — | 1985-03-12 |