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发明名称
VERFAHREN UND VORRICHTUNG ZUR BOHRLOCHVORBEREITUNG UND ZUM TESTEN
摘要
申请公布号
DE3229151(A1)
申请公布日期
1983.02.24
申请号
DE19823229151
申请日期
1982.08.04
申请人
OTIS ENGINEERING CORP.
发明人
IWAN GAZDA,IMRE
分类号
E21B47/00;E21B33/12;E21B33/129;E21B49/08;(IPC1-7):E21B17/01
主分类号
E21B47/00
代理机构
代理人
主权项
地址
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