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发明名称
摘要
申请公布号
JPH0520108(U)
申请公布日期
1993.03.12
申请号
JP19900405493U
申请日期
1990.12.28
申请人
发明人
分类号
F16K31/126;G05D16/06;(IPC1-7):G05D16/06
主分类号
F16K31/126
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代理人
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