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发明名称
Improvements in or relating to alarm devices
摘要
申请公布号
GB337904(A)
申请公布日期
1930.11.13
申请号
GB19290028472
申请日期
1929.09.19
申请人
N.V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G08B13/24
主分类号
G08B13/24
代理机构
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