Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11305321 | Hydraulic forming machine and metal ball forming machine | Shixiong Chen, Yanjuan Wang, Zhenzhong WANG, Shujuan Tang, Jian Yang +5 more | 2022-04-19 |
| 5240346 | Manhole having a splayed rib ring formed at underside of the lid thereof | — | 1993-08-31 |