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经营范围
发明名称
Improvements in or relating to ionization smoke detectors
摘要
申请公布号
GB2014782(A)
申请公布日期
1979.08.30
申请号
GB19790000054
申请日期
1979.01.02
申请人
SOUND DIFFUSION LTD
发明人
分类号
G08B17/11;G08B17/113;(IPC1-7):H01J39/28
主分类号
G08B17/11
代理机构
代理人
主权项
地址
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