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发明名称
Radio signaling system
摘要
申请公布号
US1775801(A)
申请公布日期
1930.09.16
申请号
US19270233509
申请日期
1927.11.15
申请人
GENERAL ELECTRIC COMPANY
发明人
ALEXANDERSON ERNST F. W.
分类号
H01Q11/04
主分类号
H01Q11/04
代理机构
代理人
主权项
地址
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