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经营范围
发明名称
BACKVENTIL
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
SE422984(B)
申请公布日期
1982.04.05
申请号
SE19760007342
申请日期
1976.06.28
申请人
* TRW INC
发明人
S P * BUCKNER
分类号
F16K15/03;(IPC1-7):16K15/03
主分类号
F16K15/03
代理机构
代理人
主权项
地址
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