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发明名称
Talking machine
摘要
申请公布号
US2058842(A)
申请公布日期
1936.10.27
申请号
US19300430053
申请日期
1930.02.20
申请人
RADIO CORPORATION OF AMERICA
发明人
THOMPSETT HARRY ARCHIBALD;CHIFFEY EDWARD
分类号
G11B17/02
主分类号
G11B17/02
代理机构
代理人
主权项
地址
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