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发明名称	VIEW CONCENTRATING DEVICE
摘要
申请公布号	KR890008228(Y1)	申请公布日期	1989.11.25
申请号	KR19870001602U	申请日期	1987.02.14
申请人	KIM, CHONG-BOO	发明人	KIM, CHONG-BOO
分类号	G03B17/56;(IPC1-7):G03B17/56	主分类号	G03B17/56
代理机构		代理人
主权项
地址

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