Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6115951 | Portable and compact retroreflective sign system | Tsunenori Matsunaga, Takashi Kawai | 2000-09-12 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6115951 | Portable and compact retroreflective sign system | Tsunenori Matsunaga, Takashi Kawai | 2000-09-12 |