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经营范围
发明名称
Electric relay or switching devices for controlling flashing and other intermittent signals
摘要
申请公布号
GB528132(A)
申请公布日期
1940.10.23
申请号
GB19390012689
申请日期
1939.04.27
申请人
WALTER STERN
发明人
分类号
H05B39/09
主分类号
H05B39/09
代理机构
代理人
主权项
地址
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