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发明名称
摘要
申请公布号
JPS52141342(U)
申请公布日期
1977.10.26
申请号
JP19760050553U
申请日期
1976.04.20
申请人
发明人
分类号
C03C25/42;G02B6/02;G02B6/036;G02B6/44;H01P3/00;(IPC1-7):G02B5/14
主分类号
C03C25/42
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