Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6497163 | Dual dial rods speed changing controller capable of linear displacement | Wen-Ching Liu | 2002-12-24 |
| 6397700 | Dual dial rod speed changing indicator | Wen-Ching Liu | 2002-06-04 |