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经营范围
发明名称
TELEPHONE SYSTEMS
摘要
申请公布号
GB1536313(A)
申请公布日期
1978.12.20
申请号
GB19760048081
申请日期
1977.11.18
申请人
GENERAL ELECTRIC CO LTD
发明人
分类号
H04Q5/24;(IPC1-7):H04M13/00
主分类号
H04Q5/24
代理机构
代理人
主权项
地址
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