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发明名称
CASING COLUMN OF WELL
摘要
申请公布号
SU802506(A1)
申请公布日期
1981.02.07
申请号
SU19782682323
申请日期
1978.11.04
申请人
SERGIENKO IVAN A,SU;MOSEV ALEKSANDR F,SU;CHERVONTSEV EVGENIJ A,SU
发明人
SERGIENKO IVAN A,SU;MOSEV ALEKSANDR F,SU;CHERVONTSEV EVGENIJ A,SU
分类号
E21B17/00;E21B43/10;(IPC1-7):E21B17/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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