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发明名称
摘要
申请公布号
JPH0281008(U)
申请公布日期
1990.06.22
申请号
JP19880160958U
申请日期
1988.12.12
申请人
发明人
分类号
F16K31/06;H01F7/127;H01F7/16;(IPC1-7):H01F7/16
主分类号
F16K31/06
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