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发明名称
Flashing light signal
摘要
申请公布号
US1902799(A)
申请公布日期
1933.03.21
申请号
US19260132998
申请日期
1926.09.01
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
DAY SALISBURY M.
分类号
B61L29/28
主分类号
B61L29/28
代理机构
代理人
主权项
地址
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