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发明名称
Device for determining direction of an astronomical body
摘要
申请公布号
US2715273(A)
申请公布日期
1955.08.16
申请号
US19520303864
申请日期
1952.08.12
申请人
HAROLD DODD;SPENCER THOMAS D
发明人
DODD HAROLD;SPENCER THOMAS D.
分类号
G01C1/00;G01C21/02
主分类号
G01C1/00
代理机构
代理人
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