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发明名称
摘要
申请公布号
JPS52107642(U)
申请公布日期
1977.08.16
申请号
JP19760015365U
申请日期
1976.02.12
申请人
发明人
分类号
G03B15/05;G03B17/24;(IPC1-7):G03B15/05
主分类号
G03B15/05
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