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发明名称
摘要
申请公布号
JPS5549139(U)
申请公布日期
1980.03.31
申请号
JP19780131409U
申请日期
1978.09.25
申请人
发明人
分类号
F16K31/40;(IPC1-7):F16K31/40
主分类号
F16K31/40
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