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发明名称
IMPROVEMENTS IN OR RELATING TO NAVIGATION SYSTEMS
摘要
申请公布号
GB1263740(A)
申请公布日期
1972.02.16
申请号
GB19690007438
申请日期
1969.02.11
申请人
BUTLER NATIONAL CORPORATION
发明人
分类号
G01S19/11;G01S19/46
主分类号
G01S19/11
代理机构
代理人
主权项
地址
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