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经营范围
发明名称
Navigational instrument
摘要
申请公布号
US2345020(A)
申请公布日期
1944.03.28
申请号
US19410389427
申请日期
1941.04.19
申请人
ALLEN WARNER LOUIS
发明人
WARNER LOUIS ALLEN
分类号
G01C21/20
主分类号
G01C21/20
代理机构
代理人
主权项
地址
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