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发明名称
摘要
申请公布号
JPS52145529(U)
申请公布日期
1977.11.04
申请号
JP19760053245U
申请日期
1976.04.30
申请人
发明人
分类号
F16K17/28;F16K17/20;G05D7/01;G05D16/10;(IPC1-7):G05D7/01
主分类号
F16K17/28
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