Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7284637 | Low-frequency sound reproducing speaker apparatus | Yasuhisa Abe, Koji Nakane, Yumi Takigami | 2007-10-23 |
| 4953220 | Mobile speaker system having an illumination effect | Fumio Murayama, Tomiaki Ando | 1990-08-28 |