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经营范围
发明名称
THE ROCK BLASTING METHOD
摘要
申请公布号
KR19990048646(A)
申请公布日期
1999.07.05
申请号
KR19970067403
申请日期
1997.12.10
申请人
DONG AH CONSTR IND CO LTD
发明人
SEO DONG-RYOL;BU SANG-KYUN;KIM JEONG-PIL;LEE JONG-MIN;KIM JEONG-JIN
分类号
F42D3/04
主分类号
F42D3/04
代理机构
代理人
主权项
地址
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