Issued Patents 2019
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10427914 | Elevator synchronous door knife | Xiaobo ZHANG, QingXi Cai, Chong Chen | 2019-10-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10427914 | Elevator synchronous door knife | Xiaobo ZHANG, QingXi Cai, Chong Chen | 2019-10-01 |