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发明名称
Modulation system
摘要
申请公布号
US2033231(A)
申请公布日期
1936.03.10
申请号
US19310563725
申请日期
1931.09.19
申请人
RADIO CORPORATION OF AMERICA
发明人
CROSBY MURRAY G.
分类号
H03C3/18;H03C3/20;H03C3/24;H03C3/26
主分类号
H03C3/18
代理机构
代理人
主权项
地址
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