Issued Patents 2021
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11187010 | Forced-entry-resistant sash lock | — | 2021-11-30 |
| 11168492 | Tamper resistant sash lock | Zhiwen Wei | 2021-11-09 |
| 11168495 | Automatically resetting window vent stop with dual safety features | David Chen | 2021-11-09 |
| 11118376 | Combination sash lock and tilt latch and slidable window vent stop | David Chen, Glen Paesano | 2021-09-14 |
| 11047157 | Vent stop | David Chen | 2021-06-29 |
| D920078 | Lock housing | Zhiwen Wei | 2021-05-25 |
| 10920469 | Double-action, adjustable, after-market sash stop | — | 2021-02-16 |