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发明名称
摘要
申请公布号	JPS57201552(U)	申请公布日期	1982.12.22
申请号	JP19810091569U	申请日期	1981.06.19
申请人		发明人
分类号	G03B27/50;G03B27/72;G03G15/04;G03G15/043;(IPC1-7):G03G15/04	主分类号	G03B27/50
代理机构		代理人
主权项
地址

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