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发明名称
Improvements in or relating to electro-magnetic step-by-step switches
摘要
申请公布号
GB349180(A)
申请公布日期
1931.05.28
申请号
GB19300008027
申请日期
1930.03.12
申请人
COVENTRY AUTOMATIC TELEPHONES LIMITED;CHARLES CLARKE PUCKETTE
发明人
分类号
H01H67/06
主分类号
H01H67/06
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代理人
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