Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D918310 | Construction set block | Lefeng Liu, Qiujie Lin, Xinshui Huang, Youjun Xiong | 2021-05-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D918310 | Construction set block | Lefeng Liu, Qiujie Lin, Xinshui Huang, Youjun Xiong | 2021-05-04 |