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发明名称
APPARATUS FOR STEPWISE CEMENTING OF CASINGS
摘要
申请公布号
SU1002529(A1)
申请公布日期
1983.03.07
申请号
SU19813369472
申请日期
1981.12.25
申请人
VNII PO KREPLENIYU SKVAZHIN BUROVYM RASTVORAM
发明人
NEZHELSKIJ ANATOLIJ A,SU;KUKSOV ANATOLIJ K,SU;EREMENKO VALENTIN V,SU;NEUDACHIN VADIM P,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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