SYSTEM AND APPARATUS FOR DETERMINING THE LISTENING HABITS OF WAVE SIGNAL RECEIVER USERS,申请号CAD525109-传众专利搜索

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发明名称	SYSTEM AND APPARATUS FOR DETERMINING THE LISTENING HABITS OF WAVE SIGNAL RECEIVER USERS
摘要
申请公布号	CA525109(A)	申请公布日期	1956.05.15
申请号	CAD525109	申请日期
申请人	A. C. NIELSEN COMPANY	发明人	HENRY A. RAHMEL
分类号		主分类号
代理机构		代理人
主权项
地址

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