CJ

Chang Hwa Jeong

EC Em-Tech Co.: 1 patents #8 of 20Top 40%
📍 Geoado-ri, KR: #10 of 20 inventorsTop 50%
Overall (2021): #500,440 of 548,734Top 95%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11206480 Open-air type earphone with bracket forming bass pipe Dong Wook Lim 2021-12-21