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发明名称
Portable signalling device
摘要
申请公布号
US2840032(A)
申请公布日期
1958.06.24
申请号
US19560584138
申请日期
1956.05.10
申请人
FALCON ALARM COMPANY, INC.
发明人
REEVES CHARLES E. GRAHAM
分类号
G10K9/04
主分类号
G10K9/04
代理机构
代理人
主权项
地址
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