Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659156 | Screw transmission mechanism for a blind | Song-He Lui | 2003-12-09 |
| 6655441 | Friction transmission mechanism for a motor-driven blind | Song-He Lui | 2003-12-02 |
| 6619365 | Plug-in transmission mechanism for a motor-driven blind | Song-He Lui | 2003-09-16 |