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发明名称
Improvements in beacon lights
摘要
申请公布号
GB346915(A)
申请公布日期
1931.04.23
申请号
GB19300006292
申请日期
1930.02.25
申请人
JOHN BRYCE BARTOW;CHARLES TOWNSEND LUDINGTON
发明人
分类号
B64F1/20
主分类号
B64F1/20
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代理人
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