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发明名称
摘要
申请公布号
JPS5227634(U)
申请公布日期
1977.02.26
申请号
JP19750113851U
申请日期
1975.08.19
申请人
发明人
分类号
F16K17/168;F16K31/06;F16K31/10;G05D16/06;(IPC1-7):F16K31/06
主分类号
F16K17/168
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