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发明名称
摘要
申请公布号
JPS5172047(U)
申请公布日期
1976.06.07
申请号
JP19740146410U
申请日期
1974.12.03
申请人
发明人
分类号
G02B6/42;G02B7/00;(IPC1-7):G02B5/14
主分类号
G02B6/42
代理机构
代理人
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