저자
Kie Hyung Chung, Kang Ok Lee, Hyeok Jung Kwon, Chul Yeong Kim, Kyoung Jae Chung
저널 정보
등록번호 / US 6,457,778 B1
출간연도
2002
링크
https://patents.google.com/patent/US6457778B1/en?oq=US+6%2c457%2c778+B1
