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发明名称
摘要
申请公布号
JPS4994250(U)
申请公布日期
1974.08.14
申请号
JP19720140816U
申请日期
1972.12.07
申请人
发明人
分类号
F16K31/24;F16K31/26;(IPC1-7):F16K31/26
主分类号
F16K31/24
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