Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8050424 | Speaker system, audio amplifier and audio system | — | 2011-11-01 |
| 7986792 | Adapter connectable between audio amplifier and transmitter for cordless speaker | — | 2011-07-26 |
| 7940943 | Speaker driving apparatus | Akira Arai | 2011-05-10 |
| 7912229 | Array driving system and method of driving loads | Shin Ito | 2011-03-22 |