Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10865592 | Sash lock and tilt latch also functioning as a window vent stop, with automatic locking upon closure | Luke Liang, David Chen | 2020-12-15 |
| 10844642 | Combination four-position sash lock and tilt latch also functioning as a window opening control device | Luke Liang, David Chen | 2020-11-24 |
| 10704297 | Impact resistant lock and tilt latch combination for a sliding sash window | Luke Liang, David Chen | 2020-07-07 |
| 10570652 | Integrated sash lock and tilt latch combination using one lock for two tilt latches | Luke Liang, David Chen | 2020-02-25 |