Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11255108 | Adaptive electric dual-controlled intelligent lock | MAN SHUN SERVER LEUNG | 2022-02-22 |
| 11180930 | Household electric and mechanical dual-controlled intelligent lock | Yan Shun Leung | 2021-11-23 |
| 8769873 | Casement window with multi-angle locking window sash | Lin Feng, Hoichi Leung | 2014-07-08 |