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发明名称
Multiple distribution system
摘要
申请公布号
US2188508(A)
申请公布日期
1940.01.30
申请号
US19370163934
申请日期
1937.09.15
申请人
WIRED RADIO, INC.
发明人
HERDMAN WILLIAM J.
分类号
H04H20/77
主分类号
H04H20/77
代理机构
代理人
主权项
地址
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