Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5255328 | Dynamic microphone | Yoshio Akiniwa | 1993-10-19 |
| 5148492 | Diaphragm of dynamic microphone | Shigeru Uzawa | 1992-09-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5255328 | Dynamic microphone | Yoshio Akiniwa | 1993-10-19 |
| 5148492 | Diaphragm of dynamic microphone | Shigeru Uzawa | 1992-09-15 |