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发明名称
摘要
申请公布号
JPS50147344(A)
申请公布日期
1975.11.26
申请号
JP19740054212
申请日期
1974.05.15
申请人
发明人
分类号
G11B7/00;G03H1/00;G11B7/0065
主分类号
G11B7/00
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