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发明名称
摘要
申请公布号
JP2697913(B2)
申请公布日期
1998.01.19
申请号
JP19890227930
申请日期
1989.08.31
申请人
发明人
分类号
G03B42/02;(IPC1-7):G03B42/02
主分类号
G03B42/02
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代理人
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