SH

Sung Ryul Hwang

DC Dong-A Pencil Co.: 2 patents #2 of 3Top 70%
📍 Seoul, KR: #137 of 1,284 inventorsTop 15%
Overall (2002): #40,307 of 266,432Top 20%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D463491 Ball point pen — 2002-09-24
D462990 Ball point pen — 2002-09-17