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发明名称
Broadcast distribution system with central station indication of total number of energized receivers
摘要
申请公布号
US3281695(A)
申请公布日期
1966.10.25
申请号
US19630264870
申请日期
1963.03.13
申请人
R. & R. RESEARCH LIMITED
发明人
BASS PATRICK
分类号
H04H60/32;H04N7/173
主分类号
H04H60/32
代理机构
代理人
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地址
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