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发明名称
Устройство для закрытия и открытия фонтанных скважин
摘要
申请公布号
SU133841(A1)
申请公布日期
1960.11.30
申请号
SU19600652613
申请日期
1960.01.29
申请人
GIRFANOV A.A.;SAFIN V.A.
发明人
GIRFANOV A.A.;SAFIN V.A.
分类号
E21B33/06;E21B34/02
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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