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发明名称
Improvements in or relating to telecommunication switching systems
摘要
申请公布号
GB628178(A)
申请公布日期
1949.08.24
申请号
GB19460020444
申请日期
1944.12.08
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
分类号
H04Q3/62
主分类号
H04Q3/62
代理机构
代理人
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