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发明名称
Burglar alarm switch device
摘要
申请公布号
US1820937(A)
申请公布日期
1931.09.01
申请号
US19280245355
申请日期
1928.01.09
申请人
MILDRED M. DANIELS
发明人
CAWLEY MICHAEL J.
分类号
H01H27/10
主分类号
H01H27/10
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代理人
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