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经营范围
发明名称
Phase modulation
摘要
申请公布号
US2081577(A)
申请公布日期
1937.05.25
申请号
US19320588309
申请日期
1932.01.23
申请人
RADIO CORPORATION OF AMERICA
发明人
CROSBY MURRAY G.
分类号
H03C3/40
主分类号
H03C3/40
代理机构
代理人
主权项
地址
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