Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7552739 | Collapsible structure | Wan-sing Chu | 2009-06-30 |
| 7357140 | Collapsible structure | Wan-sing Chu | 2008-04-15 |
| 7252107 | Pop up collapsible structures | Wan-sing Chu | 2007-08-07 |
| 6782905 | Convertible play structure | Wan-sing Chu | 2004-08-31 |
| D429307 | Foldable playhouse | Wan-sing Chu | 2000-08-08 |