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发明名称
摘要
<p>An improvement in multi-flapper check valves wherein each flapper is urged toward closure by an independent spring or springs, thereby improving the valve response for closure.</p>
申请公布号
LU75262(A1)
申请公布日期
1977.03.18
申请号
LU19760075262
申请日期
1976.06.28
申请人
发明人
分类号
F16K15/03
主分类号
F16K15/03
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