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发明名称
SCREW-THREADED COUPLING
摘要
申请公布号
GB2097502(B)
申请公布日期
1984.12.12
申请号
GB19820012302
申请日期
1982.04.28
申请人
MANNESMANN AG
发明人
分类号
E21B17/042;E21B17/08;F16L15/00;(IPC1-7):F16L15/00
主分类号
E21B17/042
代理机构
代理人
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地址
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