Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11173433 | Service life reminding system for water bottle filter element | Weifu Guo, Shiyi Zhang | 2021-11-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11173433 | Service life reminding system for water bottle filter element | Weifu Guo, Shiyi Zhang | 2021-11-16 |