Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4760487 | Differential relay for protecting an electrical power transmission system | Wah S. Kwong | 1988-07-26 |
| 4370691 | Protection apparatus for electric power transmission systems | — | 1983-01-25 |