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发明名称
摘要
申请公布号
JPH0446271(U)
申请公布日期
1992.04.20
申请号
JP19900087434U
申请日期
1990.08.23
申请人
发明人
分类号
F16K17/18;F15B11/00;(IPC1-7):F16K17/18
主分类号
F16K17/18
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代理人
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