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发明名称
Alarm switch
摘要
申请公布号
US2550673(A)
申请公布日期
1951.05.01
申请号
US19470787428
申请日期
1947.11.21
申请人
JOHN CUFALO
发明人
CUFALO JOHN
分类号
H01H37/52
主分类号
H01H37/52
代理机构
代理人
主权项
地址
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