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发明名称
IMPROVEMENTS IN OR RELATING TO METHODS OF MINING
摘要
申请公布号
ZA7604387(B)
申请公布日期
1977.09.28
申请号
ZA19760004387
申请日期
1976.07.22
申请人
DELFOS & ATLAS COPCO LTD
发明人
HERRON L
分类号
E21C;E21D
主分类号
E21C
代理机构
代理人
主权项
地址
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