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发明名称
Reversible check valve
摘要
申请公布号
US2804086(A)
申请公布日期
1957.08.27
申请号
US19540473239
申请日期
1954.12.06
申请人
JOHN BLUE COMPANY, INCORPORATED
发明人
JOHNSTON DOUGLAS
分类号
F04B53/10;F16K15/02
主分类号
F04B53/10
代理机构
代理人
主权项
地址
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