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公开(公告)号:KR200488554Y1
公开(公告)日:2019-05-21
申请号:KR2020160007315
申请日:2016-12-15
Applicant: 한국도로공사
Inventor: 박태영 , 정훈 , 홍순욱 , 허광회
IPC: E01D19/08 , E03F5/04
公开(公告)号:KR3009114020000S
公开(公告)日:2017-06-21
申请号:KR3020160061147
Designer: 박태영 , 정훈 , 홍순욱 , 허광회