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经营范围
发明名称
DREHBOHRMEISSEL FUER TIEFBOHRUNGEN
摘要
申请公布号
DE3030010(A1)
申请公布日期
1982.02.25
申请号
DE19803030010
申请日期
1980.08.08
申请人
CHRISTENSEN,INC.
发明人
JUERGENS,RAINER,DR.-ING.;RATHKAMP,HERMANN
分类号
B22F7/08;E21B10/46;E21B10/56;E21B10/567;E21B10/60;(IPC1-7):E21B10/46
主分类号
B22F7/08
代理机构
代理人
主权项
地址
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