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发明名称
摘要
申请公布号
JPS4730021(U)
申请公布日期
1972.12.05
申请号
JP19710035152U
申请日期
1971.04.30
申请人
发明人
分类号
F16K27/06;F16K5/02;F16L27/08;(IPC1-7):F16K5/02
主分类号
F16K27/06
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代理人
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