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发明名称
Device and method for replacing lines
摘要
申请公布号
GB2389382(B)
申请公布日期
2004.12.15
申请号
GB20030015737
申请日期
2001.12.21
申请人
* TRACTO-TECHNIK GMBH
发明人
HANS-JOACHIM * BAYER
分类号
E21B7/20;E21B7/28;(IPC1-7):E21B7/20;F03B1/00;F03B13/02
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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