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发明名称
摘要
申请公布号
JPS5475738(U)
申请公布日期
1979.05.29
申请号
JP19770149468U
申请日期
1977.11.09
申请人
发明人
分类号
G03B23/10;(IPC1-7):G03B23/10
主分类号
G03B23/10
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代理人
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