Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657941 | Recording/reproducing device | Isao Satoh | 2003-12-02 |
| 6580800 | Acoustic transducer | Takayoshi Yamasaki, Mikio Suefuji, Tatsuto Mizukami, Hiroshi Yoshiya, Ryouichi Yagi | 2003-06-17 |