Original document(13 pages)  中文版
    Title: Improvement in or relating to exchanges
Application Number
申请号
90102466 Application Date
申请日
1990.03.31
Title 名称 Improvement in or relating to exchanges
Publication Number
公开号
1046432 Publication Date
公开日
1990.10.24
Approval Pub. Date Granted Pub. Date
International Classification 分类号 H04Q1/14,H04Q3/00
Applicant(s) Name
申请人
GEC Plessey Telecommunications Ltd.
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人 CAO JIHONG LI XIANCHUN
More information 更  多  信  息


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