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经营范围
发明名称
Electric siren
摘要
申请公布号
US1991718(A)
申请公布日期
1935.02.19
申请号
US19280268359
申请日期
1928.04.07
申请人
THE STERLING SIREN FIRE ALARM COMPANY INC.
发明人
ARMSTRONG MERTON C.
分类号
G10K7/04
主分类号
G10K7/04
代理机构
代理人
主权项
地址
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