Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7974423 | Loudspeaker system | Toshiyuki Matsumura, Shuji Saiki, Mitsukazu Kuze | 2011-07-05 |
| 7885425 | Electrodynamic electroacoustic transducer and electronic device | Toshiyuki Matsumura, Shuji Saiki, Koji Sano | 2011-02-08 |