CY

Chang Bong Yoon

DC Dong-A Pencil Co.: 3 patents #1 of 3Top 35%
📍 Seoul, KR: #58 of 1,284 inventorsTop 5%
Overall (2002): #31,527 of 266,432Top 15%
3
Patents 2002

Issued Patents 2002

Showing 1–3 of 3 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