Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5786699 | Test method and apparatus for testing a protective relay system | Tetsuo Matsushima | 1998-07-28 |
| 5666060 | Test method and apparatus for testing a protective relay system | Tetsuo Matsushima | 1997-09-09 |
| 5576625 | Test method and apparatus for testing a protective relay system | Tetsuo Matsushima | 1996-11-19 |