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发明名称
DEVICE FOR DRILLING A BORE HOLES IN THE GROUND
摘要
申请公布号
HK1018637(A1)
申请公布日期
2002.08.02
申请号
HK19990103700
申请日期
1999.08.27
申请人
WIRTH MASCHINEN-UND BOHRGERAETE-FABRIK GMBH
发明人
TIBUSSEK, FRITZ;HEINRICHS, PETER
分类号
E21B17/05;E21B3/025;E21B4/20;E21B21/02;F16J15/00;F16J15/32;(IPC1-7):E21B;F16J
主分类号
E21B17/05
代理机构
代理人
主权项
地址
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