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发明名称
摘要
申请公布号
JPS4941619(U)
申请公布日期
1974.04.12
申请号
JP19720084966U
申请日期
1972.07.18
申请人
发明人
分类号
F16K31/34;E03C1/042;(IPC1-7):E03C1/042
主分类号
F16K31/34
代理机构
代理人
主权项
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