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发明名称
摘要
申请公布号
JPS56162372(U)
申请公布日期
1981.12.02
申请号
JP19800060774U
申请日期
1980.05.03
申请人
发明人
分类号
F16K31/06;F16K7/12;F16K7/18;(IPC1-7):F16K31/06
主分类号
F16K31/06
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代理人
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