Issued Patents 2016
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9388612 | Casement window opening control device | Tong Liang, David Chen | 2016-07-12 |
| 9376834 | Screwless sash lock for metal and plastic window sashes and the like | Tong Liang, David Chen | 2016-06-28 |
| D756746 | Sash lock and keeper | Tong Liang, David Chen | 2016-05-24 |