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发明名称
Screen alarm
摘要
申请公布号
US2547283(A)
申请公布日期
1951.04.03
申请号
US19490128525
申请日期
1949.11.21
申请人
PURDIN EARL B
发明人
PURDIN EARL B.
分类号
E05B45/08
主分类号
E05B45/08
代理机构
代理人
主权项
地址
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