Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843622 | Communication control system capable of searching a called telephone set in a mobile radio telephone network | Akio Yotsutani, Toshihiko Shibata, Yoshitoshi Murata | 1989-06-27 |