Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10895281 | Curved groove ball bearing without retainer | Kangquan Guo, Yaohua Hu, Wenjing Zhang, Mingfang WU | 2021-01-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10895281 | Curved groove ball bearing without retainer | Kangquan Guo, Yaohua Hu, Wenjing Zhang, Mingfang WU | 2021-01-19 |