Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D314374 | Key telephone set | Yoshio Sasaki, Hiroshi Ishizuka, Tsuneji Kimeda | 1991-02-05 |
| D309726 | Telephone handset | Yoshio Sasaki, Hiroyoshi Sato, Tsuneji Kimeda | 1990-08-07 |
| D301578 | Telephone handset | Yoshio Sasaki, Hiroshi Ishizuka, Tsuneji Kimeda | 1989-06-13 |
| D301031 | Key telephone set | Yoshio Sasaki, Hiroyoshi Sato, Tsuneji Kimeda | 1989-05-09 |