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发明名称
Gate type dual seal valve
摘要
申请公布号
US2977086(A)
申请公布日期
1961.03.28
申请号
US19580743716
申请日期
1958.06.23
申请人
HEINEN IRVING J
发明人
HEINEN IRVING J.
分类号
F16K3/18
主分类号
F16K3/18
代理机构
代理人
主权项
地址
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