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发明名称
Electro-optical telephone line interface unit
摘要
申请公布号
GB2061672(A)
申请公布日期
1981.05.13
申请号
GB19790031851
申请日期
1979.09.13
申请人
STERLAND M J N;GOWER M P
发明人
分类号
H04L25/26;(IPC1-7):H04L25/06
主分类号
H04L25/26
代理机构
代理人
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地址
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