Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8744097 | Microphone device | Tetsuo Itou | 2014-06-03 |
| 7775812 | Connection device to which electric device is connected and having dust-proof function | Tetsuo Ito, Tomio Takegawa | 2010-08-17 |