Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8769873 | Casement window with multi-angle locking window sash | Lin Feng, Lok Shun Leung | 2014-07-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8769873 | Casement window with multi-angle locking window sash | Lin Feng, Lok Shun Leung | 2014-07-08 |