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发明名称
Course-indicating apparatus for vehicles
摘要
申请公布号
US2271296(A)
申请公布日期
1942.01.27
申请号
US19400334963
申请日期
1940.05.13
申请人
GORDON HARGRAVE JOHN;CEDRIC WILLIAMS DENIS
发明人
HARGRAVE JOHN GORDON;WILLIAMS DENIS CEDRIC
分类号
G09B29/10
主分类号
G09B29/10
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代理人
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