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发明名称
Fire alarm
摘要
申请公布号
US1800801(A)
申请公布日期
1931.04.14
申请号
US19280307431
申请日期
1928.09.21
申请人
THE SENTINAL FIRE ALARM COMPANY
发明人
MARKLUND CHARLES OLAF
分类号
G08B17/04
主分类号
G08B17/04
代理机构
代理人
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地址
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