Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8890651 | Interchangeable lock core and opening method thereof | Shuqiang Jin, Qing Chang, Hongwei Qiao, Lei Ji | 2014-11-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8890651 | Interchangeable lock core and opening method thereof | Shuqiang Jin, Qing Chang, Hongwei Qiao, Lei Ji | 2014-11-18 |