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经营范围
发明名称
STEP GROUTING COUPLING
摘要
申请公布号
SU763581(A1)
申请公布日期
1980.09.15
申请号
SU19762424980
申请日期
1976.11.29
申请人
VNII PO KREPLENIYU SKVAZHIN BUROVYM RASTVORAM
发明人
ABRAMOV ARKADIJ A,SU;VDOVENKO ALEKSEJ ,SU;DULAEV VALERIJ KH,SU;IZMAJLOV LAZAR B,SU
分类号
E21B33/14;(IPC1-7):E21B33/14
主分类号
E21B33/14
代理机构
代理人
主权项
地址
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