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发明名称
Improvements in or relating to automatic telephone exchanges with staff locators
摘要
申请公布号
GB717216(A)
申请公布日期
1954.10.20
申请号
GB19520018140
申请日期
1952.07.17
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
分类号
H04M11/02;H04M15/08
主分类号
H04M11/02
代理机构
代理人
主权项
地址
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