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发明名称
Navigational computing instrument
摘要
申请公布号
US1743239(A)
申请公布日期
1930.01.14
申请号
US19230662817
申请日期
1923.09.15
申请人
FORD INSTRUMENT COMPANY, INC.
发明人
ROSS ELLIOTT P.
分类号
G01C21/20
主分类号
G01C21/20
代理机构
代理人
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地址
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