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发明名称
Perfectionnements aux indicateurs électriques
摘要
申请公布号
FR977353(A)
申请公布日期
1951.03.30
申请号
FRD977353
申请日期
1948.12.16
申请人
S. SMITH & SONS (ENGLAND) LIMITED
发明人
分类号
G08C19/06
主分类号
G08C19/06
代理机构
代理人
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