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经营范围
发明名称
COMPOSITE BLAST BARRICADE
摘要
申请公布号
ZA9007633(B)
申请公布日期
1991.06.26
申请号
ZA19900007633
申请日期
1990.09.25
申请人
GDS MINING (PTY) LIMITED
发明人
ROBERT JOHN ROY
分类号
E21D;E21F;F42D
主分类号
E21D
代理机构
代理人
主权项
地址
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