Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6522757 | Bass intensification device for speaker system | Shigenori Hiramatsu, Fuminori Sato, Koji Osuga, Akihiro Ozono | 2003-02-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6522757 | Bass intensification device for speaker system | Shigenori Hiramatsu, Fuminori Sato, Koji Osuga, Akihiro Ozono | 2003-02-18 |