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发明名称
Fire alarm
摘要
申请公布号
US2428107(A)
申请公布日期
1947.09.30
申请号
US19460691842
申请日期
1946.08.20
申请人
ALBERT YOHN
发明人
YOHN ALBERT
分类号
G08B17/08
主分类号
G08B17/08
代理机构
代理人
主权项
地址
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