Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413703 | Bass-reflex type speaker system | Hironori Yamada, Kaoru Yamazaki, Masashi Maruyama, Takashi Ogasawara | 1983-11-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413703 | Bass-reflex type speaker system | Hironori Yamada, Kaoru Yamazaki, Masashi Maruyama, Takashi Ogasawara | 1983-11-08 |