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发明名称
摘要
申请公布号
JPS5839456(Y2)
申请公布日期
1983.09.06
申请号
JP19760145981U
申请日期
1976.10.29
申请人
发明人
分类号
G03B15/02;G03B15/05;G03B17/18;(IPC1-7):G03B15/02
主分类号
G03B15/02
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