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发明名称
Improvements in burglar, fire and like alarm arrangements for use in telephone systems
摘要
申请公布号
GB466348(A)
申请公布日期
1937.05.21
申请号
GB19350029058
申请日期
1935.10.21
申请人
ELECTRO-GARD'
发明人
分类号
H04M11/04
主分类号
H04M11/04
代理机构
代理人
主权项
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