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经营范围
发明名称
Surveillance system and apparatus for recording the listening or viewing habits of radiant energy wave signal receiver users
摘要
申请公布号
US3328802(A)
申请公布日期
1967.06.27
申请号
US19650447022
申请日期
1965.04.09
申请人
DA MOTTA HELIO SILVEIRA
发明人
MOTTA HELIO SILVEIRA DA
分类号
H04H60/31
主分类号
H04H60/31
代理机构
代理人
主权项
地址
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Assembly shelf
Bundle Box and Instrument Roll
