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经营范围
发明名称
Improvements in or relating to radio direction determining systems
摘要
申请公布号
GB409298(A)
申请公布日期
1934.04.25
申请号
GB19320029815
申请日期
1932.10.25
申请人
ELECTRICAL RESEARCH PRODUCTS INC.
发明人
分类号
G01S11/10
主分类号
G01S11/10
代理机构
代理人
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