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发明名称
摘要
申请公布号
JPS553590(Y2)
申请公布日期
1980.01.28
申请号
JP19750094512U
申请日期
1975.07.07
申请人
发明人
分类号
G03B1/00;G11B23/02;(IPC1-7):G11B23/10
主分类号
G03B1/00
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代理人
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