Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8042657 | One-way load self-control spiral type brake | Guogang Zhang, Mingqiang Wang | 2011-10-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8042657 | One-way load self-control spiral type brake | Guogang Zhang, Mingqiang Wang | 2011-10-25 |