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发明名称
Bohrwerkzeuge
摘要
申请公布号
DE2059932(A1)
申请公布日期
1972.06.08
申请号
DE19702059932
申请日期
1970.12.05
申请人
UGINE CARBONE
发明人
WETZCHEWALD,KARLHEINZ
分类号
E21B10/38;E21B10/62;E21B17/07
主分类号
E21B10/38
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代理人
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