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发明名称
摘要
申请公布号
JPS488395(U)
申请公布日期
1973.01.30
申请号
JP19710049321U
申请日期
1971.06.11
申请人
发明人
分类号
G02B27/08;(IPC1-7):G02B27/08
主分类号
G02B27/08
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代理人
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