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公开(公告)号:KR100688032B1
公开(公告)日:2007-03-02
申请号:KR1020050132290
申请日:2005-12-28
Applicant: 성균관대학교산학협력단
Inventor: 석창성 , 허용 , 김형익 , 이영돈
IPC: E03C1/04 , F16K31/00 , E03B5/02 , E03C1/05