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发明名称
Position-indicating device
摘要
申请公布号
US2428427(A)
申请公布日期
1947.10.07
申请号
US19440554197
申请日期
1944.09.15
申请人
HAZELTINE RESEARCH, INC.
发明人
LOUGHREN ARTHUR V.
分类号
G01S13/76
主分类号
G01S13/76
代理机构
代理人
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地址
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