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发明名称
摘要
申请公布号
JPS648716(U)
申请公布日期
1989.01.18
申请号
JP19870103781U
申请日期
1987.07.06
申请人
发明人
分类号
G01D5/22;(IPC1-7):H01F31/00
主分类号
G01D5/22
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代理人
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