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发明名称
Plug for bore-holes in mining operations.
摘要
申请公布号
ZA200304007(B)
申请公布日期
2004.03.25
申请号
ZA20030004007
申请日期
2003.05.23
申请人
TUDOR GROUP INNOVATIONS CC.
发明人
STANLEY NANCE-KIVELL;FREDERICK BERRANGE
分类号
E21B
主分类号
E21B
代理机构
代理人
主权项
地址
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