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发明名称
Improvements in and relating to electro-magnetic flashing devices
摘要
申请公布号
GB730307(A)
申请公布日期
1955.05.18
申请号
GB19520025993
申请日期
1952.10.16
申请人
LONDEX LIMITED;WALTER LEOPOLD STERN
发明人
分类号
G08B5/38
主分类号
G08B5/38
代理机构
代理人
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