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发明名称
摘要
申请公布号
JPS56175814(U)
申请公布日期
1981.12.25
申请号
JP19810065782U
申请日期
1981.05.06
申请人
发明人
分类号
G02C5/16;G02C11/00;(IPC1-7):G02C11/00
主分类号
G02C5/16
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代理人
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