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发明名称
摘要
申请公布号
JPS5649023(Y2)
申请公布日期
1981.11.16
申请号
JP19780122520U
申请日期
1978.09.06
申请人
发明人
分类号
F16K1/52;F16K1/04;F16K3/32;F16K47/10;(IPC1-7):F16K47/10
主分类号
F16K1/52
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