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发明名称
Signal system
摘要
申请公布号
US2270769(A)
申请公布日期
1942.01.20
申请号
US19390270181
申请日期
1939.04.26
申请人
QUICK HAROLD O
发明人
QUICK HAROLD O.
分类号
G08B27/00
主分类号
G08B27/00
代理机构
代理人
主权项
地址
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