CY

Chengpeng Yu

Overall (2022): #169,159 of 548,613Top 35%
2
Patents 2022

Issued Patents 2022

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11241903 Lift-pull pen 2022-02-08
11241904 Retractable pen 2022-02-08