Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840860 | Double-action, adjustable, after-market sash stop | — | 2017-12-12 |
| 9670705 | Casement window opening control device | Tong Liang, David Chen | 2017-06-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840860 | Double-action, adjustable, after-market sash stop | — | 2017-12-12 |
| 9670705 | Casement window opening control device | Tong Liang, David Chen | 2017-06-06 |