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发明名称
Earth boring apparatus
摘要
申请公布号
GB0002526(D0)
申请公布日期
2000.03.29
申请号
GB20000002526
申请日期
2000.02.04
申请人
TRACTO-TECHNIK-PAUL SCHMIDT SPEZIALMASCHINEN
发明人
分类号
E21B7/06;E21B7/26;E21B17/20;F16L11/10
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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