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发明名称
System for determining the listening habits of wave signal receiver users
摘要
申请公布号
US3070798(A)
申请公布日期
1962.12.25
申请号
US19580740639
申请日期
1958.06.09
申请人
A. C. NIELSEN COMPANY
发明人
CURREY CHARLES H.;BROWN ARTHUR CHARLES LEWIS;HOLBROOK DARREL W.;TRUESDALE GORDON K.;FREEMAN ROBERT L.
分类号
H04H60/32
主分类号
H04H60/32
代理机构
代理人
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地址
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