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发明名称
摘要
申请公布号
JP2549467(Y2)
申请公布日期
1997.09.30
申请号
JP19900040715U
申请日期
1990.04.17
申请人
发明人
分类号
G03B21/56;G09F9/00;H04N5/74;(IPC1-7):H04N5/74
主分类号
G03B21/56
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