Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11192769 | Hollow needle insertion structure used in wine fresh-keeping device | Zhongshu Qin | 2021-12-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11192769 | Hollow needle insertion structure used in wine fresh-keeping device | Zhongshu Qin | 2021-12-07 |