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发明名称
Two-wire alarm or control system
摘要
申请公布号
US2696603(A)
申请公布日期
1954.12.07
申请号
US19520292706
申请日期
1952.06.10
申请人
HARALD EKMAN OLOF INGEMAR
发明人
EKMAN OLOF INGEMAR HARALD
分类号
G08B17/06
主分类号
G08B17/06
代理机构
代理人
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