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发明名称
摘要
申请公布号	JPS6448853(U)	申请公布日期	1989.03.27
申请号	JP19870144726U	申请日期	1987.09.22
申请人		发明人
分类号	H01J23/10;H01J25/55;(IPC1-7):H01J23/10	主分类号	H01J23/10
代理机构		代理人
主权项
地址

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