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发明名称
MEISSEL ZUM TRENNEN VON GESTEIN
摘要
申请公布号
AT371569(B)
申请公布日期
1983.07.11
申请号
AT19800002760
申请日期
1980.05.22
申请人
VEDECKO VYZKUMNY UHELNY USTAV
发明人
分类号
E21B10/56;E21C35/18;E21C35/183;(IPC1-7):E21C25/18
主分类号
E21B10/56
代理机构
代理人
主权项
地址
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