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发明名称
摘要
申请公布号	JPS533785(Y2)	申请公布日期	1978.01.31
申请号	JP19720057346U	申请日期	1972.05.17
申请人		发明人
分类号	G03B27/34;G03B27/50;G03F7/20;G03G13/00;G03G15/04;G03G15/041;G03G21/00;(IPC1-7):G03B27/50	主分类号	G03B27/34
代理机构		代理人
主权项
地址

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