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发明名称
摘要
申请公布号
JPH0322797(Y2)
申请公布日期
1991.05.17
申请号
JP19840096220U
申请日期
1984.06.26
申请人
发明人
分类号
G04B21/06;G10K1/064;(IPC1-7):G10K1/064
主分类号
G04B21/06
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代理人
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