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经营范围
发明名称
AUDIENCE SURVEY SYSTEM
摘要
申请公布号
US3456192(A)
申请公布日期
1969.07.15
申请号
USD3456192
申请日期
1968.04.22
申请人
TELTRONIC MEASUREMENT SYSTEMS INC.
发明人
STEPHEN A. MIXSELL;HANSEL B. MEAD
分类号
H04H60/43;(IPC1-7):H04B1/36
主分类号
H04H60/43
代理机构
代理人
主权项
地址
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