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发明名称
Improvements in and relating to electric regulating resistances
摘要
申请公布号
GB400339(A)
申请公布日期
1933.10.26
申请号
GB19320017399
申请日期
1932.06.20
申请人
L'ECLAIRAGE DES VEHICULES SUR RAIL
发明人
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主分类号
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