Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7428836 | Door lock having reinforced strength | Zhen Yang, Mu-Gui Yang | 2008-09-30 |
| 6851287 | Lock having a quick unlocking function | Zhen Yang, Mu-Gui Yang | 2005-02-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7428836 | Door lock having reinforced strength | Zhen Yang, Mu-Gui Yang | 2008-09-30 |
| 6851287 | Lock having a quick unlocking function | Zhen Yang, Mu-Gui Yang | 2005-02-08 |