Ahn, Sung Oh; Park, Chan Hee; Im, Jun Hwan; Lee, Soon Ok; Lee, Kyoung June; Cho, Seong Wook; Ko, Kwang Seok; Han, Sun Young; Lee, Won Il
Patent: US2011/28467 A1, 2011 ;
Location in patent: Page/Page column 52 ;
US 20110028467 A1