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经营范围
发明名称
Navigational instrument
摘要
申请公布号
US2545935(A)
申请公布日期
1951.03.20
申请号
US19470769399
申请日期
1947.08.19
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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