Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D643406 | Speaker | Koichi Nakao | 2011-08-16 |
| D638399 | Speaker | Koichi Nakao | 2011-05-24 |
| 7915510 | Tuner for musical instruments and amplifier with tuner | Masato Ueno, Kosuke Takata | 2011-03-29 |