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发明名称
Duplex radio communication
摘要
申请公布号
US2311435(A)
申请公布日期
1943.02.16
申请号
US19410395928
申请日期
1941.05.31
申请人
ERNST GERHARD
发明人
GERHARD ERNST
分类号
H01Q1/52
主分类号
H01Q1/52
代理机构
代理人
主权项
地址
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