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发明名称
摘要
申请公布号
JPS52167942(U)
申请公布日期
1977.12.20
申请号
JP19760077330U
申请日期
1976.06.14
申请人
发明人
分类号
G02B25/00;G02B27/02;(IPC1-7):G02B27/02
主分类号
G02B25/00
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代理人
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