Apparatus for use in determining the listening or viewing habits of wave signal receiver users,申请号GB19560028395-传众专利搜索

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发明名称	Apparatus for use in determining the listening or viewing habits of wave signal receiver users
摘要
申请公布号	GB773680(A)	申请公布日期	1957.05.01
申请号	GB19560028395	申请日期	1954.08.04
申请人	A. C. NIELSEN COMPANY LIMITED	发明人
分类号	H04H60/32	主分类号	H04H60/32
代理机构		代理人
主权项
地址

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