Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9441417 | Pull rope free curtain structure | Chin-Chang Shih | 2016-09-13 |
| 8794296 | Window blind without using a lift cord | Chin-Chang Shih | 2014-08-05 |
| 8789575 | Stringless blinds | Chin-Chang Shih | 2014-07-29 |