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发明名称
摘要
申请公布号
JPS51154533(U)
申请公布日期
1976.12.09
申请号
JP19750073305U
申请日期
1975.06.02
申请人
发明人
分类号
G03B9/02;G03B15/03;G03B15/05;(IPC1-7):G03B15/03
主分类号
G03B9/02
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