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发明名称
Connecting device at crossbar switch for selection of connecting links
摘要
申请公布号
US2575882(A)
申请公布日期
1951.11.20
申请号
US19480031076
申请日期
1948.06.04
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
LUNDKVIST KARL AXEL
分类号
H04Q3/00
主分类号
H04Q3/00
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