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经营范围
发明名称
COUPLING DEVICE
摘要
申请公布号
SG103087(G)
申请公布日期
1988.06.03
申请号
SG19870001030
申请日期
1987.11.25
申请人
HALLIBURTON COMP.
发明人
分类号
E21B17/08;E21B33/05;F16L37/12;(IPC1-7):E21B17/08
主分类号
E21B17/08
代理机构
代理人
主权项
地址
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