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发明名称
Ball check valve
摘要
申请公布号
US2074701(A)
申请公布日期
1937.03.23
申请号
US19320612525
申请日期
1932.05.20
申请人
LOHMOLDER EDWARD H
发明人
LOHMOLDER EDWARD H.
分类号
F16K31/18
主分类号
F16K31/18
代理机构
代理人
主权项
地址
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