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发明名称
Enclosure protecting alarm
摘要
申请公布号
US2069953(A)
申请公布日期
1937.02.09
申请号
US19300499004
申请日期
1930.11.29
申请人
HOPKINS RICHARD M
发明人
HOPKINS RICHARD M.
分类号
G08B13/20
主分类号
G08B13/20
代理机构
代理人
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地址
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