Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637976 | Method and apparatus for RMS current measurement in induction motors without a current transformer | Li Chen | 1997-06-10 |
| 5627447 | Method and apparatus for detecting current delay angle from motor terminal voltage | Jinghan Tao | 1997-05-06 |