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发明名称
摘要
申请公布号
JPS474927(U)
申请公布日期
1972.09.13
申请号
JP19710006686U
申请日期
1971.02.08
申请人
发明人
分类号
G03B21/54;B65H75/30;G03B21/00;G11B15/32;G11B23/04;G11B23/08;G11B23/093;(IPC1-7):G11B15/32
主分类号
G03B21/54
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