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发明名称
摘要
申请公布号
JPH071651(Y2)
申请公布日期
1995.01.18
申请号
JP19890036738U
申请日期
1989.03.30
申请人
发明人
分类号
G09B27/06;(IPC1-7):G09B27/06
主分类号
G09B27/06
代理机构
代理人
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地址
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