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发明名称
Valves
摘要
申请公布号
US2969811(A)
申请公布日期
1961.01.31
申请号
US19550494180
申请日期
1955.03.14
申请人
FREEMAN MATHEW L
发明人
FREEMAN MATHEW L.
分类号
F16K11/10;F16K31/126
主分类号
F16K11/10
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代理人
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