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发明名称
摘要
申请公布号
JP2549750(Y2)
申请公布日期
1997.09.30
申请号
JP19930015449U
申请日期
1993.03.30
申请人
发明人
分类号
G04C23/08;G04B21/02;G04C3/00;G04C21/16;(IPC1-7):G04C21/16
主分类号
G04C23/08
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