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发明名称
Radio system
摘要
申请公布号
US1821650(A)
申请公布日期
1931.09.01
申请号
US19280288462
申请日期
1928.06.26
申请人
FEDERAL TELEGRAPH COMPANY
发明人
KOLSTER FREDERICK A.
分类号
G01S3/06
主分类号
G01S3/06
代理机构
代理人
主权项
地址
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