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经营范围
发明名称
APPARATUS FOR DRILLING WITH CORE-TAKING
摘要
申请公布号
SU713979(A1)
申请公布日期
1980.02.05
申请号
SU19762428035
申请日期
1976.12.08
申请人
VNII BUROVOJ TEKHNIKI
发明人
BARSHAJ GEORGIJ S,SU;BERGSHTEJN OLEG YU,SU;VOROZHBITOV MARAT ,SU;GELFGAT MIKHAIL YA,SU;GELFGAT YAKOV A,SU;GOLUBEV GENNADIJ R,SU;EDELMAN YAKOV A,SU
分类号
E21B25/00;E21B21/00;(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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