YC

Yung-Chu Cheng

Overall (2021): #196,350 of 548,734Top 40%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10881819 First-aid mask and inflatable structure thereof Chien-Feng CHENG, Yu-Liang CHENG 2021-01-05