Issued Patents 2018
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10119310 | Combination sash lock and tilt latch with improved interconnection for blind mating of the latch to the lock | Tong Liang, David Chen | 2018-11-06 |
| 10107021 | Window vent stop with plastic spring member for bi-directional biasing of the tumbler | Tong Liang, David Chen | 2018-10-23 |
| 10053896 | Window vent stop with flexible side engagement pieces | Tong Liang, David Chen | 2018-08-21 |
| 10006232 | Window vent stop with flexible side engagement pieces | Tong Liang, David Chen | 2018-06-26 |