Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4412104 | Rectangular magnetic circuit for speaker | Osamu Fujita, Shinya Okayasu, Motoharu Shimizu, Nobuo Kakinuma | 1983-10-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4412104 | Rectangular magnetic circuit for speaker | Osamu Fujita, Shinya Okayasu, Motoharu Shimizu, Nobuo Kakinuma | 1983-10-25 |