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发明名称
摘要
申请公布号
JPS5222218(U)
申请公布日期
1977.02.17
申请号
JP19750099326U
申请日期
1975.07.16
申请人
发明人
分类号
F16K31/50;F16K31/44;(IPC1-7):F16K31/44
主分类号
F16K31/50
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代理人
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