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发明名称
摘要
申请公布号
JPS55140874(U)
申请公布日期
1980.10.08
申请号
JP19790041259U
申请日期
1979.03.28
申请人
发明人
分类号
F16K31/70;F16K17/38;G05D23/08;(IPC1-7):F16K17/38
主分类号
F16K31/70
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代理人
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