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发明名称
ANORDNING FOER BORRNING I STEN, MALM ELLER LIKNANDE.
摘要
申请公布号
FI854555(A0)
申请公布日期
1985.11.19
申请号
FI19850004555
申请日期
1985.11.19
申请人
VEREINIGTE EDELSTAHLWERKE AKTIENGESELLSCHAFT (VEW)
发明人
HOLTSCHULTE, ULRICH;GUER, AZIZ;KORTAN, OSKAR;PIRKNER, WALTER;SCHOEN, KONRAD
分类号
E21B7/02;E21D20/00;(IPC1-7):E21C/
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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