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发明名称
Telegraphone
摘要
申请公布号
US2526051(A)
申请公布日期
1950.10.17
申请号
US19460697590
申请日期
1946.09.17
申请人
RADIO CORPORATION OF AMERICA
发明人
SHRADER HERRY M.
分类号
主分类号
代理机构
代理人
主权项
地址
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