CR

Chang Wan Ryoo

📍 Seoul, KR: #450 of 1,579 inventorsTop 30%
Overall (2004): #245,463 of 270,089Top 95%
1
Patents 2004

Issued Patents 2004

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6793135 Electronic payment system using multifunctional prepaid cards and method of selling prepaid cards 2004-09-21