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发明名称
Signaling system and apparatus therefor
摘要
申请公布号
US1915263(A)
申请公布日期
1933.06.20
申请号
US19230656527
申请日期
1923.08.09
申请人
JOHN C. LITT;PERCIVAL W. COWLES;AUTOMATIC FIRE ALARM COMPANY
发明人
SCHARFF JOSEPH H.
分类号
G08B17/04
主分类号
G08B17/04
代理机构
代理人
主权项
地址
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