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经营范围
发明名称
DIRECTIONAL RADIO RECEIVER
摘要
申请公布号
CA348468(A)
申请公布日期
1935.02.26
申请号
CAD348468
申请日期
申请人
THE CANADIAN MARCONI COMPANY
发明人
FRED WOODS
分类号
主分类号
代理机构
代理人
主权项
地址
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