Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8604706 | Lamp tube switch circuit | Qing-Shan Cao, Zheng-Nian Liu, Lin Zhou | 2013-12-10 |
| 8366467 | Illumination device with a connector having a retainer with a rotary member | Qing-Shan Cao, Zheng-Nian Liu, Lin Zhou | 2013-02-05 |