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发明名称
DIRECTIONAL AERIAL SYSTEM QUADRANTAL-ERROR-CORRECTING DEVICE
摘要
申请公布号
CA442247(A)
申请公布日期
1947.06.17
申请号
CAD442247
申请日期
申请人
CANADIAN MARCONI COMPANY
发明人
JAMES HARDWICKE MOON
分类号
主分类号
代理机构
代理人
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