Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10066418 | Changeable combined mechanical key | Yongzhi Zhang, Naizhong Chen, Xixiang Ding | 2018-09-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10066418 | Changeable combined mechanical key | Yongzhi Zhang, Naizhong Chen, Xixiang Ding | 2018-09-04 |