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发明名称
Alarm device
摘要
申请公布号
US1979653(A)
申请公布日期
1934.11.06
申请号
US19330663985
申请日期
1933.04.01
申请人
GRANT TREFETHEN CHARLES
发明人
TREFETHEN CHARLES GRANT
分类号
G08B15/00
主分类号
G08B15/00
代理机构
代理人
主权项
地址
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