SIGNAL METHOD OF A DOOR VIDEOPHONE USING MULTIPLE CONNECTED MONITORS AND DOOR VIDEOPHONE ADAPTING THE METHOD,申请号KR19970003187-传众专利搜索

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发明名称	SIGNAL METHOD OF A DOOR VIDEOPHONE USING MULTIPLE CONNECTED MONITORS AND DOOR VIDEOPHONE ADAPTING THE METHOD
摘要
申请公布号	KR100222144(B1)	申请公布日期	1999.10.01
申请号	KR19970003187	申请日期	1997.02.01
申请人	KO, SUNG-WOOK	发明人	KO, SUNG-UK
分类号	H04N7/18;H04M9/00;H04M9/04;(IPC1-7):H04N7/18	主分类号	H04N7/18
代理机构		代理人
主权项
地址

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