Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357666 | Digital distance relays | Ryotaro Kondow, Kunio Matsuzawa | 1982-11-02 |
| 4344143 | Digital type distance relay system | Yasuhiro Kurosawa | 1982-08-10 |
| 4333151 | Method for protecting an electric power system and digital protective system | — | 1982-06-01 |