Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689728 | Lamp assembly | Yoshihiro Yamai, Hideo Hamamoto | 1987-08-25 |
| 4542448 | Lamp assembly | Yoshihiro Yamai, Hideo Hamamoto | 1985-09-17 |
| 4530041 | Signal lamp with a movable slit plate | Yoshihiro Yamai, Hideo Hamamoto | 1985-07-16 |