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发明名称
Light signal
摘要
申请公布号
US1919276(A)
申请公布日期
1933.07.25
申请号
US19310559165
申请日期
1931.08.25
申请人
EDWARDS EVAN E
发明人
EDWARDS EVAN E.
分类号
F21S8/10;F21S8/12
主分类号
F21S8/10
代理机构
代理人
主权项
地址
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