Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5086450 | Emergency intercommunication system for elevator | Kenzo Tachino, Yasuhiro Nagata, Tomoichiro Yamamoto, Shigemi Iwata, Terumi Hirabayashi +1 more | 1992-02-04 |
SK
Shigeo Kitagawa
Overall (All Time): #3,843,279 of 4,157,543Top 95%
1
Patents All Time