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发明名称
Alarm system
摘要
申请公布号
US2390449(A)
申请公布日期
1945.12.04
申请号
US19420448941
申请日期
1942.06.29
申请人
MONTGOMERY ARVID N
发明人
MONTGOMERY ARVID N.
分类号
G04C13/00;G08B23/00
主分类号
G04C13/00
代理机构
代理人
主权项
地址
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