Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657762 | Optical barrier device | Toshihito Shirai | 2003-12-02 |
| 6504485 | Monitoring apparatus and control apparatus for traffic signal lights | Yoshitaka Jinno, Yoshiharu Ozaki, Norihiro Okada, Heisaku Mazawa, Hidetoshi Fujimoto +2 more | 2003-01-07 |