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发明名称
Устройство для предотвращения перелива жидкости через трубы
摘要
申请公布号
SU143756(A1)
申请公布日期
1961.11.30
申请号
SU19610730827
申请日期
1961.05.17
申请人
发明人
SAFIN V.A.
分类号
E21B21/00;E21B17/06;E21B33/08
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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