MP3/MPEG door answering system,申请号GB20020017752-传众专利搜索

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发明名称	MP3/MPEG door answering system
摘要
申请公布号	GB0217752(D0)	申请公布日期	2002.09.11
申请号	GB20020017752	申请日期	2002.07.31
申请人	BAKER, THOMAS M	发明人
分类号	G11B31/00;G11B31/02	主分类号	G11B31/00
代理机构		代理人
主权项
地址

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