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发明名称
Steered-head ram drilling tool
摘要
申请公布号
AU6536199(A)
申请公布日期
2000.06.29
申请号
AU19990065361
申请日期
1999.12.21
申请人
TRACTO-TECHNIK PAUL SCHMIDT SPEZIALMASCHINEN
发明人
FRANZ-JOSEF PUTTMANN
分类号
E21B7/06;E21B7/26
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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