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发明名称
摘要
申请公布号
JPH03117205(U)
申请公布日期
1991.12.04
申请号
JP19900025509U
申请日期
1990.03.13
申请人
发明人
分类号
G02B6/44;G02B6/00;G02B6/46;(IPC1-7):G02B6/00
主分类号
G02B6/44
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代理人
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