Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9868000 | Descent rescue device with double brake and back and forth controlled | Qianjing Huang | 2018-01-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9868000 | Descent rescue device with double brake and back and forth controlled | Qianjing Huang | 2018-01-16 |