Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5123413 | Electric therapeutic apparatus | Ryozo Hasegawa, Akira Kato, Toshimi Nishiyama | 1992-06-23 |
| 4334315 | Wireless transmitting and receiving systems including ear microphones | Hiroshi Ono | 1982-06-08 |