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发明名称
MINING SYSTEMS
摘要
申请公布号
ZA7701446(B)
申请公布日期
1979.02.28
申请号
ZA19770001446
申请日期
1977.03.10
申请人
CHAMBER OF MINES SERVICES LTD
发明人
PHILLIPS R;HAMILTON T;SMALL F
分类号
E21F13/08
主分类号
E21F13/08
代理机构
代理人
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