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经营范围
发明名称
BORING DEVICE
摘要
申请公布号
EP1012440(A1)
申请公布日期
2000.06.28
申请号
EP19990936506
申请日期
1999.07.09
申请人
BTD BOHRTECHNIK GMBH
发明人
WESSELMANN, BERNHARD;BOETTGER, PETER
分类号
E21B4/20;E21B6/00;E21B7/20;E21B17/18;E21B21/02;E21B21/12;(IPC1-7):E21B21/12
主分类号
E21B4/20
代理机构
代理人
主权项
地址
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