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发明名称
Reproducing head for magnetic telegraphones
摘要
申请公布号
US2423339(A)
申请公布日期
1947.07.01
申请号
US19440547132
申请日期
1944.07.29
申请人
RADIO CORPORATION OF AMERICA
发明人
NEWMAN WILLIAM E.
分类号
G11B5/33
主分类号
G11B5/33
代理机构
代理人
主权项
地址
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