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发明名称
Fire alarm
摘要
申请公布号
US2215838(A)
申请公布日期
1940.09.24
申请号
US19390263549
申请日期
1939.03.22
申请人
PROULX JOSEPH O
发明人
PROULX JOSEPH O.
分类号
G08B17/06
主分类号
G08B17/06
代理机构
代理人
主权项
地址
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