Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6774817 | Reflection multiplier radio wave marker system and traffic system | Satoru Handa | 2004-08-10 |
| 6757087 | Optical display | Yoshinao Taketomi, Toshihiro Kubota, Zenrou Hayashi | 2004-06-29 |