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发明名称
RADIO DIRECTION FINDER
摘要
申请公布号
CA449937(A)
申请公布日期
1948.07.20
申请号
CAD449937
申请日期
申请人
CANADIAN MARCONI COMPANY
发明人
CHRISTOPHER SYDNEY COCKERELL
分类号
主分类号
代理机构
代理人
主权项
地址
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