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发明名称
Radio receiving system
摘要
申请公布号
US2037485(A)
申请公布日期
1936.04.14
申请号
US19310531806
申请日期
1931.04.21
申请人
RITTER FREDERICK J
发明人
RITTER FREDERICK J.
分类号
H04B1/16
主分类号
H04B1/16
代理机构
代理人
主权项
地址
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