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发明名称
CHECK VALVE FOR CASINGS
摘要
申请公布号
SU1218078(A1)
申请公布日期
1986.03.15
申请号
SU19843726683
申请日期
1984.04.12
申请人
VNII PO KREPLENIYU SKVAZHIN BUROVYM RASTVORAM
发明人
LADYGA ALEKSEJ V,SU;KUKSOV ANATOLIJ K,SU;ABRAMOV ARKADIJ A,SU;DZHANGIROV SUREN S,SU
分类号
E21B34/10;(IPC1-7):E21B34/10
主分类号
E21B34/10
代理机构
代理人
主权项
地址
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