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Fire alarm
摘要
申请公布号
US2920167(A)
申请公布日期
1960.01.05
申请号
US19580717381
申请日期
1958.02.25
申请人
MILBURN HILL
发明人
HILL MILBURN
分类号
G08B17/06
主分类号
G08B17/06
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