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专利详情
Apparatus for indicating the accuracy of aim
申请公布号:
US1743201(A)
申请号:
US19280279460
申请日期:
1928.05.21
申请公布日期:
1930.01.14
申请人:
FEY EDMUND C
发明人:
FEY EDMUND C.
分类号:
G07F17/38
主分类号:
G07F17/38
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