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经营范围
发明名称
Improvements in or relating to radio navigation systems
摘要
申请公布号
GB587351(A)
申请公布日期
1947.04.23
申请号
GB19430015161
申请日期
1943.09.15
申请人
FREDERICK CALLAND WILLIAMS
发明人
分类号
G01S1/02;G01S5/14
主分类号
G01S1/02
代理机构
代理人
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