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发明名称
摘要
申请公布号
JPH0676913(U)
申请公布日期
1994.10.28
申请号
JP19900402238U
申请日期
1990.12.27
申请人
发明人
分类号
G02B6/44;(IPC1-7):G02B6/44
主分类号
G02B6/44
代理机构
代理人
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地址
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