DY

Dung-Chang Yeh

C( Champ Tech Optical (Foshan): 1 patents #1 of 6Top 20%
Overall (2021): #468,791 of 548,734Top 90%
1
Patents 2021

Issued Patents 2021

Patent #TitleCo-InventorsDate
11065687 Method for manufacturing metal product with two blanks Yi-Fan Lin, Jin Zhu 2021-07-20