Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5086450 | Emergency intercommunication system for elevator | Shigeo Kitagawa, Kenzo Tachino, Yasuhiro Nagata, Shigemi Iwata, Terumi Hirabayashi +1 more | 1992-02-04 |
| 4593792 | Apparatus for controlling a hydraulic elevator | — | 1986-06-10 |