Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D306726 | Telephone set | Tadashi Watanabe | 1990-03-20 |
| D284568 | Telephone | Yoku Yamagami | 1986-07-08 |
| D284078 | Telephone | Yoku Yamagami | 1986-06-03 |
| D277929 | Telephone | Motoaki Sakamoto, Ichiro Sato | 1985-03-12 |