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发明名称
Improvements in or relating to telephone exchange systems
摘要
申请公布号
GB1070901(A)
申请公布日期
1967.06.07
申请号
GB19630000408
申请日期
1963.01.03
申请人
HER MAJESTY'S POSTMASTER GENERAL
发明人
FLOWERS THOMAS HAROLD
分类号
H04M3/00
主分类号
H04M3/00
代理机构
代理人
主权项
地址
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