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经营范围
发明名称
TELEPHONE SYSTEMS
摘要
申请公布号
GB1482525(A)
申请公布日期
1977.08.10
申请号
GB19730051376
申请日期
1973.11.06
申请人
GENERAL ELECTRIC CO LTD
发明人
分类号
H04M9/00;H04Q3/62;(IPC1-7):H04Q3/00
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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