Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10598182 | Ventilation apparatus with counter-rotating impellers driven by long shaft | Ziming Kou, Juan Wu, Guijun Gao, Shanrong Da, Jing Zhang +3 more | 2020-03-24 |
| D875496 | Sharpener | — | 2020-02-18 |