Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10807045 | Central tube for filter cartridge and filtering device having same | Guodong Song, Peng Gui | 2020-10-20 |
| 10589229 | Central tube component of filter element and manufacturing method thereof | Guodong Song, Peng Gui | 2020-03-17 |