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发明名称
摘要
申请公布号
JPS4811713(U)
申请公布日期
1973.02.09
申请号
JP19710053097U
申请日期
1971.06.18
申请人
发明人
分类号
G11B5/55;G11B31/00;H04M1/272;H04M1/276;(IPC1-7):H04M1/276
主分类号
G11B5/55
代理机构
代理人
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