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发明名称
Improvements relating to electromagnetic devices
摘要
申请公布号
GB855981(A)
申请公布日期
1960.12.14
申请号
GB19580030849
申请日期
1958.09.26
申请人
SPOORWEG SEIN INDUSTRIE N.V.
发明人
分类号
G08B5/30
主分类号
G08B5/30
代理机构
代理人
主权项
地址
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