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发明名称
Improvements in and relating to staff locating systems
摘要
申请公布号
GB550934(A)
申请公布日期
1943.02.01
申请号
GB19410012761
申请日期
1941.10.02
申请人
WALTER STERN
发明人
分类号
G08B3/10
主分类号
G08B3/10
代理机构
代理人
主权项
地址
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