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发明名称
Telescopic joint control line system
摘要
申请公布号
GB2316108(B)
申请公布日期
2000.04.26
申请号
GB19970011734
申请日期
1997.06.07
申请人
* ABB VETCO GRAY INC
发明人
ASHLEY N M * BRAMMER
分类号
E21B17/08;E21B19/00;(IPC1-7):E21B17/01
主分类号
E21B17/08
代理机构
代理人
主权项
地址
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