Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230634 | Protector for mounting on leading cord chip | Kimio Yamaguchi, Takeshi Yushiya, Chuji Shimizu | 1993-07-27 |
| D337310 | Protective cover for an electrical plug | Kimio Yamaguchi, Takeshi Ushiya, Chuji Shimizu | 1993-07-13 |