Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6403911 | Method and apparatus for the wire cut electric discharge machine | Jih-Jong Hsu, Chih-Hsien Chien, Jui-Fang Liang, Yea-June Day | 2002-06-11 |
| 5685796 | Planetary gearing unit | Lei Chen | 1997-11-11 |