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发明名称
Modulation system
摘要
申请公布号
US2207498(A)
申请公布日期
1940.07.09
申请号
US19380213984
申请日期
1938.06.16
申请人
RADIO CORPORATION
发明人
TWATT JAMES
分类号
H03C1/16;H03F1/06
主分类号
H03C1/16
代理机构
代理人
主权项
地址
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