SH

Sung Ryul Hwang

DC Dong-A Pencil Co.: 6 patents #3 of 9Top 35%
📍 Seoul, KR: #9,067 of 39,741 inventorsTop 25%
Overall (All Time): #878,465 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
D487770 Ball point pen — 2004-03-23
D487771 Ball point pen — 2004-03-23
D482398 Marker pen — 2003-11-18
D480756 Ball point pen — 2003-10-14
D463491 Ball point pen — 2002-09-24
D462990 Ball point pen — 2002-09-17