CY

Chang Bong Yoon

DC Dong-A Pencil Co.: 6 patents #3 of 9Top 35%
📍 Seoul, KR: #9,067 of 39,741 inventorsTop 25%
Overall (All Time): #882,445 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
D464083 Ball-point pen — 2002-10-08
D463823 Ball point pen — 2002-10-01
D463489 Ball point pen — 2002-09-24
D447173 Marking pen — 2001-08-28
D446813 Ball point pen — 2001-08-21
D445830 Ball point pen — 2001-07-31