METHOD AND APPARATUS FOR AUTOMATICALLY DETERMINING THE LISTENING HABITS OF WAVE SIGNAL RECEIVER USERS,申请号CAD634229-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR AUTOMATICALLY DETERMINING THE LISTENING HABITS OF WAVE SIGNAL RECEIVER USERS
摘要
申请公布号	CA634229(A)	申请公布日期	1962.01.09
申请号	CAD634229	申请日期
申请人	A. C. NIELSEN COMPANY	发明人	ROBERT L. FREEMAN;CHARLES H. CURREY
分类号		主分类号
代理机构		代理人
主权项
地址

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