Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347408 | Multi-frequency signal receiver | Hiroko Ito, Eiji Ohira | 1982-08-31 |
| 4340781 | Speech analysing device | Kazuo Nakata, Akira Nakajima, Yoshihiro Ohta, Kazuhiro Umemura | 1982-07-20 |