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发明名称
DEVICE FOR REMOVING ARTICLES FROM HOLE BOTTOM
摘要
申请公布号
SU802522(A1)
申请公布日期
1981.02.07
申请号
SU19792719217
申请日期
1979.01.30
申请人
IVANO-FRANKOVSKIJ I NEFTI GAZA MVSSO UK SSR
发明人
YASOV VITALIJ G,SU;ORYNCHAK NIKOLAJ ,SU;GOLOVATYJ TARAS G,SU
分类号
E21B31/00;(IPC1-7):E21B31/00
主分类号
E21B31/00
代理机构
代理人
主权项
地址
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