Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5054052 | Mobile telephone device with low power consumption | — | 1991-10-01 |
| 4876714 | Telephone set | Shigeyuki Yoshida, Atsushi Musha | 1989-10-24 |
| 4819174 | Road navigation system | Kenichi Furuno, Yoshio Tooko | 1989-04-04 |