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发明名称
摘要
申请公布号
JPS5857806(U)
申请公布日期
1983.04.19
申请号
JP19810152321U
申请日期
1981.10.14
申请人
发明人
分类号
G02B5/28;G02B21/16;(IPC1-7):G02B5/28
主分类号
G02B5/28
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代理人
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