Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4194095 | Fluid flow control speaker system | Toshitada Doi, Akira Iga, Osamu Hamada, Yuichiro Hamada | 1980-03-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4194095 | Fluid flow control speaker system | Toshitada Doi, Akira Iga, Osamu Hamada, Yuichiro Hamada | 1980-03-18 |