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发明名称
Improvements in or relating to switching devices for the setting of cross-bar switches by means of markers
摘要
申请公布号
GB661163(A)
申请公布日期
1951.11.21
申请号
GB19470013412
申请日期
1947.05.19
申请人
TELEFONAKTIEBOLAGET L.M. ERICSSON
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
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