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发明名称
摘要
申请公布号
JP2516566(Y2)
申请公布日期
1996.11.06
申请号
JP19900109460U
申请日期
1990.10.19
申请人
发明人
分类号
G04B19/28;(IPC1-7):G04B19/28
主分类号
G04B19/28
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代理人
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