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发明名称
Telephone system for centralizing of pbx-exchanges
摘要
申请公布号
US3188397(A)
申请公布日期
1965.06.08
申请号
US19600077607
申请日期
1960.12.22
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
BERGMANN ANDERS KARLBY
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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