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发明名称
摘要
申请公布号
JPS57169874(U)
申请公布日期
1982.10.26
申请号
JP19810057321U
申请日期
1981.04.20
申请人
发明人
分类号
F16K31/60;F16K35/02;(IPC1-7):F16K35/02
主分类号
F16K31/60
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代理人
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