Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852148 | Radio telephone system | Mitsuo Sato, Yoshitoshi Murata, Noriaki Nagashima | 1989-07-25 |
| 4843622 | Communication control system capable of searching a called telephone set in a mobile radio telephone network | Akio Yotsutani, Yukihiro Sako, Yoshitoshi Murata | 1989-06-27 |