Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11415133 | Multi-stage dry roots vacuum pump | Dongsheng Ding, Yiwen Ma | 2022-08-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11415133 | Multi-stage dry roots vacuum pump | Dongsheng Ding, Yiwen Ma | 2022-08-16 |