Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8959677 | Sofa air bed | Lee Pil Yul, Ye Zhengyi | 2015-02-24 |
| 8245332 | Collapsible bed assembly | Lee Pil Yul | 2012-08-21 |
| 7757314 | Collapsible structure | Lee Pil Yul, Ye Zhengyi | 2010-07-20 |