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经营范围
发明名称
Air pilot instruction system
摘要
申请公布号
US2374401(A)
申请公布日期
1945.04.24
申请号
US19430488160
申请日期
1943.05.24
申请人
WHITE WILLIAM N
发明人
WHITE WILLIAM N.
分类号
G09B9/30
主分类号
G09B9/30
代理机构
代理人
主权项
地址
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