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发明名称
Drilling device
摘要
申请公布号
EP0886034(A3)
申请公布日期
1999.11.03
申请号
EP19980110952
申请日期
1998.06.16
申请人
TRACTO-TECHNIK PAUL SCHMIDT SPEZIALMASCHINEN
发明人
PUETTMANN, FRANZ-JOSEF;BALVE, GERHARD
分类号
E21B7/30;E21B19/086;(IPC1-7):E21B19/16;E21B19/08
主分类号
E21B7/30
代理机构
代理人
主权项
地址
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