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发明名称
Differential pressure closed safety valve
摘要
申请公布号
US2569316(A)
申请公布日期
1951.09.25
申请号
US19480061368
申请日期
1948.09.27
申请人
JERMAN DANIEL L
发明人
JERMAN DANIEL L.
分类号
F16K15/04;F16K31/08
主分类号
F16K15/04
代理机构
代理人
主权项
地址
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