Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6534730 | Rotatively-operated switch apparatus and communication terminal apparatus | Satoshi Mitsuma, Yuji Haraguchi | 2003-03-18 |
| 6411710 | Voice receiving mechanism and handset | Kazuhito Sato | 2002-06-25 |