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发明名称
摘要
申请公布号
JPS5221450(Y2)
申请公布日期
1977.05.17
申请号
JP19720027061U
申请日期
1972.03.07
申请人
发明人
分类号
F16K17/10;F16K31/06;F16K31/40;(IPC1-7):F16K17/10
主分类号
F16K17/10
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