SK

See Hyung Kim

EC Ehwa Diamond Industrial Co.: 2 patents #1 of 8Top 15%
EC Ehwa Diamond Ind. Co.: 1 patents #3 of 8Top 40%
Overall (2003): #22,096 of 273,478Top 9%
3
Patents 2003

Issued Patents 2003

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D477207 Grinding cup Joon Ho Chang 2003-07-15
D474954 Grinding cup Joon Ho Chang 2003-05-27
6564887 Core drill Jae Hyun Hong, Chang-Hyun Lee 2003-05-20