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发明名称
KERNROHRE FUER RICHTUNGSSTABILES BOHREN
摘要
申请公布号
DD260629(A3)
申请公布日期
1988.10.05
申请号
DD19860291580
申请日期
1986.06.23
申请人
SDAG WISMUT,DD
发明人
MEINEL,HELMUT,DD;LINK,JOACHIM,DD;BODENBERGER,EWALD,DD;LAGEMANN,MANFRED,DD;SCHOENE,GERHARD,DD;MOTZ,HERBERT,DD
分类号
E21B25/00;(IPC1-7):E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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