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发明名称
APPARATUS FOR OPENING-UP A PRODUCTION FORMATION
摘要
申请公布号
SU909109(A1)
申请公布日期
1982.02.28
申请号
SU19802942108
申请日期
1980.05.05
申请人
BRUSS NI GEOLOGORAZVEDOCHNYJ IU GEOLOGII PRI SOVETE MINISTROV BSSR
发明人
BABETS MIKHAIL A,SU;NECHAEV NIKOLAJ D,SU
分类号
E21B21/00;(IPC1-7):E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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