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发明名称
Borehulls-motormontasje
摘要
申请公布号
NO20003849(A)
申请公布日期
2000.09.22
申请号
NO20000003849
申请日期
2000.07.27
申请人
NEYRFOR-WEIR LTD
发明人
DOWNIE, ANDREW
分类号
E21B4/16;E21B7/06;E21B7/08;(IPC1-7):E21B7/06;E21B4/00
主分类号
E21B4/16
代理机构
代理人
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地址
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