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发明名称
Alarm installation with central power supply
摘要
申请公布号
US2397906(A)
申请公布日期
1946.04.09
申请号
US19410415806
申请日期
1941.10.20
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
AHLBERG CURT FREDRIK;NILSSON STEN AKE
分类号
G08B23/00
主分类号
G08B23/00
代理机构
代理人
主权项
地址
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