Optical peephole device,申请号GB19790005442-传众专利搜索

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发明名称	Optical peephole device
摘要
申请公布号	GB2042203(A)	申请公布日期	1980.09.17
申请号	GB19790005442	申请日期	1979.02.15
申请人	LEGRAND D L	发明人
分类号	G02B25/04;(IPC1-7):G02B25/04	主分类号	G02B25/04
代理机构		代理人
主权项
地址

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