Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10457524 | Tension device for drive chain, method and escalator system using same | Yajun Dong | 2019-10-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10457524 | Tension device for drive chain, method and escalator system using same | Yajun Dong | 2019-10-29 |