IMPROVED DOOR ENTRY PHONE,申请号GB19890007714-传众专利搜索

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发明名称	IMPROVED DOOR ENTRY PHONE
摘要
申请公布号	GB8907714(D0)	申请公布日期	1989.05.17
申请号	GB19890007714	申请日期	1989.04.05
申请人	CHILVERS, GRAHAM	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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