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发明名称
Dreh-Schlag-Bohrwerkzeug sowie Verfahren zur Gesteinsbohrung
摘要
申请公布号
DE4105738(C2)
申请公布日期
1997.07.03
申请号
DE19914105738
申请日期
1991.02.23
申请人
HUNSDORFER, EMMERICH, 35781 WEILBURG, DE
发明人
HUNSDORFER, EMMERICH, 35781 WEILBURG, DE
分类号
E21B10/56;(IPC1-7):E21B10/58
主分类号
E21B10/56
代理机构
代理人
主权项
地址
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