Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8077881 | Sound device | Masayuki Takagi, Masato Ueno | 2011-12-13 |
| 7915510 | Tuner for musical instruments and amplifier with tuner | Masato Ueno, Yoshinobu Morimoto | 2011-03-29 |
| 7912233 | Speaker system for musical instruments | Masayuki Takagi | 2011-03-22 |