Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6721151 | Ground fault interrupter | Kiyoshi Goto, Yoshihisa Ishigami | 2004-04-13 |
| 6703842 | Method for discriminating abnormal current including arc current in AC load circuit and apparatus for executing the same | Yasuo Itimura, Akimi Shiokawa | 2004-03-09 |