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发明名称
DEVICE FOR SHUTTING-OFF WELL
摘要
申请公布号
SU977723(A1)
申请公布日期
1982.11.30
申请号
SU19813272795
申请日期
1981.04.10
申请人
SIBIRSKIJ NII NEFTYANOJ PROMY;O ZAVOD GLAVTYUMENNEFTEGAZ "ELEKTRON"
发明人
AFANASEV VLADIMIR A,SU;PANASYUCHENKO MIKHAIL M,SU
分类号
E21B43/00;E21B34/06;(IPC1-7):E21B43/00
主分类号
E21B43/00
代理机构
代理人
主权项
地址
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