Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10323439 | Method of securing a sash window and door for transport | David Chen | 2019-06-18 |
| 10323446 | Integrated sash lock and tilt latch combination with improved interconnection capability therebetween | Tong Liang, David Chen | 2019-06-18 |
| 10174530 | Casement window opening control device with sliding arms | Tong Liang, David Chen | 2019-01-08 |